In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 326 trials, the touch therapists were correct 152 times. Complete parts (a) through (d).

A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 307 people over the age of 55, 72 dream in black and white, and among 289 people under the age of 25, 20 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below.

The Process of Science

1. After formulating a hypothesis, a scientist

(a) proves the hypothesis to be true or false.

(b) test the hypothesis

(c) decides how to best avoid having a control

(d) makes sure environmental conditions are just right

(e) formulates a scientific theory

2. Experiments examine the contribution of the .........to the observation.

(a) respeonding variable

(b) control group

(c) standard deviation

(d) experimental variable

3. Which of the following is not correctly linked?

(a) model: a representation of an experiment

(b) standard deviation: a from of statistical analysis

(c) principle: a theory that is not supported by experimental evidence

(d) data: the results of an experiment or observation.

Challenges Facing Science:

4. Which of the following applies scientific knowledge to the needs of society?

(a) evolution

(b) taxonomy

(c) systematics

(d) technology

5. Which of the following represents the permanent loss of a species?

(a) natural selection

(b) greenhouse effect

(c) extinction

(d) climate change.

6. and SARS are examples of

(a) extinct species

(b) forms of greenhouse gases

(c) endangered habitats.

(d) emerging diseases.

Use the sample data and confidence level given below to complete parts (a) through (d).

A research institute poil asked respondents if they felt vulnerable to identity theft. In the poil. n=1089 and x=570 who said ''yes. ''Use a 99% confidence level.

Click the icon to view a tabie of z scores.

(a) Find the best point estimate of the population proportion p.

a. find the best point estimate of the population proportion p.(Round to three decimal places as needed.)

b. Identify the value of the margin of error(Round to three decimal places as needed.)

c. Construct the confidence interval(Round to three decimal places as needed.)

d. write a ststement that correctly inteprets the confidence interval(Round to three decimal places as needed.)