redskunk221

You select a marble without looking and then put it back. if you do this 12 times, what is the best prediction possible for the number of times you will pick a green or a white?

It is the top question. I have answered it but know it is wrong

Spectacular gems inc. maintains a large supply of diamonds rings. The mean price of the inventory is $250 and for the standard distribution of prices the standard deviation is $50. Let X be the median price of samples of n= 36.

Using 10-bit floating point notation having the format SEEEMMMMMM:

a. Decode to decimal integer and/or fraction): 0001110110

b. Decode to decimal integer and/or fraction): 1101100000

You are studying the ages of people afflicted with acne. You collected a random sample of 49 people that have acne and recorded their ages. Using this data, you find that the sample mean age is 18.2 years and sample standard deviation is 18.3 years. Assume that the ages are normally distributed.

To find a 91% confidence interval for the ages of people with acne, what z-value would you need to use?

Calculate the lower boundary of a 91% confidence interval for the ages of people with acne.(Round to two decimal places)

Calculate the upper boundary of a 91% confidence interval for the ages of people with acne.(Round to two decimal places)

If you were working for the Plumbing Authority, which measure of central tendency would be best for the public to use in evaluating the product?  

How do I calculate the frequency and proportion using R program?

Is there an association between the size of city parks and income at the dissemination area (DA) level for the City of Vancouver based on the data given? 

Write the following numbers in order from smallest to largest: 6, 15, -5, 0, -2

How many classes should a histogram contain if the number of observations is 250?

If x has a normal distribution with μ =1 and σ =4, we denote y=4*x+8. Then, the mean of the random variable y is

• Part (a)

  Find the probability that a person has both type O blood and the Rh− facto

BMI is a formula which involves two variables: mass and height. As is

common in mathematics, freeze one of the variables (call it the parameter)

and analyze how the formula depends on the remaining variable. Sketch the

graph to show how BMI depends on the mass for people who are 1.7 metres

tall (here, the height is taken as the parameter). Add to the graph two more

curves for people with different heights, and label all three curves. Label the

axes. (5 points; use a drawing or slide-presentation program to draw the

lines, or draw it by hand, take a photo of it and copy it into your document)

I'm very confused on how to go about doing this. Any advice is appreciated. I'm using R Code for this.

Attached a question. I have trouble understanding what the question wants me to calculate

For each variable, find the data point farthest from the mean (it could be either above or below the mean). Find the z-score for each of these points. Based on the z-score, is either of these points considered an outlier by this definition? If so, was it also an outlier based on the fences for that variable
 
The first variable is "# of family" it is that whole row

I had a pregnant chocolate doberman the gave birth to beautiful puppies. Lets exam the probability my doberman had 10 puppies and has exactly 3 girls.
Next lets look at the probability she had more than 3 girls.
Finally, lets look at the probability that she had at most 3 girls.
Assume a .5 chance of having a girl.  solve binomial probability question in python show how it done in python.

Total number of ways the top 4 races in a 20 person race can finish.

 find the data point farthest from the mean (it could be either above or below the mean). Find the z-score for each of these points. 

The collection of all elements of interest in particular study is

As members of the fandom know, one of the largest debates currently is whether
female fans prefer Thor or Loki (it’s the golden-boy/bad boy debate). To make this
even nerd-ier, you decide that you’re going to do some math to figure this out. You
hypothesize that if “birds of a feather flock together” then girls with more “attitude”
prefer Loki, but girls with more compassion prefer Thor. You head toward the
nearest convention and poll 21 Loki fans and 21 Thor fans using the Helping Hands
Scale (HHS). You’ve obtained a mean score of 76 for Thor fans, with a standard
deviation of 7, and a mean of 65 for Loki fans with a standard deviation of 12. Is
there a difference between groups? (note: higher scores mean more helpful)

What is the code for a Number Guessing game in Processing that tells you if the number is higher or lower based on your guess?

Alice and Bob vote in each parliamentary election. If, in a certain election, Alice and Bob vote for the same party, they vote for it again in the next election. If they vote for different parties, next each of them switches their opinion independently with probability 1/4 .

1. Devise a Markov model to describe their votes in the n-th election, under the simplifying assumptions that they are immortal, the parliamentary system in the UK is stable and there are only two parties (C and L). 

2. Draw the transition graph and write down the transition matrix (note that you need to number the states!) 

3. Assume that in the n-th election Alice voted C and Bob voted L. What is the (conditional) probability that in the n + 2-nd election Alice will vote L and Bob will vote C? 

4. Assume that in the n-th election Alice and Bob both voted L. What is the (conditional) probability that in the n − 1-st election Alice voted C?

The average student spends 8.5 hours every week doing homework. A random sample of 40 Dowling students revealed that the average number of hours spent every week studying was 9.6 hours. The population standard deviation is 3.2 hours.
At the 0.05 level of significance, can it be concluded that this represents a difference from the national average?

An attempt was made to evaluate the forward rate as a predictor of the spot rate in the Canadian treasury bill market?' For a sample of seventy-nine quarterly observations, the estimated linear regression. y = .00027 + .7916x was obtained,

where y = Actual change in the spot rate

x = Change in the spot rate predicted by the forward rate

The coefficient of determination was .097, and the estimated standard deviation of the estimator of the slope of the population regression line was .2759.

(a) Interpret the slope of the estimated regression line.

(b) Interpret the coefficient of determination.

(c) Test the null hypothesis that the slope of the population regression line is 0 against the alternative that the true slope is positive, and interpret your result.

(d) Test against a two-sided alternative the null hypothesis that the slope of the population regression line is 1, and interpret your result.

Complete the two way table summarizing the findings.

I had a pregnant chocolate doberman the gave birth to beautiful puppies. Lets exam the probability my doberman had 10 puppies and has exactly 3 girls.
Next lets look at the probability she had more than 3 girls.
Finally, lets look at the probability that she had at most 3 girls.
Assume a .5 chance of having a girl.  solve binomial probability question in Excel show how it done in excel.

You are studying the affect of financial means on students' average hours of sleep. You have found a reliable study indicating that students that have a job and do not receive financial support from their parents or guardians sleep an average of 5.8 hours per night (excluding weekends) on average (population average).
You decide to test whether or not students who do not work get more sleep per week night on average. You take a sample of 63 students that do not work and live with parents or guardians then you record the number of hours per week night they sleep for a period of 15 weeks (1 semester). You find that the average (mean) hours slept per week night in your sample is 7.2 hours and the standard deviation is 3.9 hours. Assume that average sleeping hours on week nights is normally distributed across students.
 
Remember to define the null and alternative hypotheses to help you answer the question.
 
What will the value of the test statistic (z-test) be?
(Round your answer to two decimal places)

A magazine used the summated rating of 10 restaurants to predict the cost of a restaurant meal.For that​ data,SSR equals 131,937.29 and SSR=131,937.29 and sst = 142,209.75. 
Determine the coefficient of​ determination, R² and interpret its meaning.

Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers. 
-A has the larger mean
-B has the larger mean
-A has the larger standard deviation
-B has the larger standard deviation
-The standard deviations of A and B are equal

#25 is the problem in the picture I need help with please.

My question is "Is there an association between the size of city parks and income at the dissemination area (DA) level for the City of Vancouver?" based on the data given. 

I’m in the post test of chapter 7: estimates and sample sizes, examples of sections are population proportion, standard deviation known/unknown, and estimating population variance 

The following gives data for the age of a car and its dollar value.