cmwilson0109

 How do astronomers know that dark matter exists? 

 What is  in simplest terms? 

A.  

B.  

C.  

Help me with one

Twenty years ago, 48% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 253 of 850 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the = 0.1 level of significance.

Because = ____  10, the sample size is _____ 5% of the population size, and the sample the requirements for testing the hypothesis satisfied.

: p = 0.48 versus :  0.48

= _____ (Round to two decimal places as needed.)

 

Find the P-value.

P-value = _____ (Round to three decimal places as needed.)

 

Determine the conclusion for this hypothesis test. Choose the correct answer below.

A. Since P-value > , do not reject the null hypothesis and conclude that there is not sufficient evidence that parents feel differently today.

B. Since P-value < , reject the null hypothesis and conclude that there is sufficient evidence that parents feel differently today.