Fayech University claims that the mean GPA of night students…

Fayech University claims that the mean GPA of night students is approximately normally distributed with mean 3 with a population standard deviation of 0.07. We wish to test the claim that the mean GPA of night students is significantly different than 3 at the 0.05 significance level.  Based on a sample of 50 people, we find the sample mean GPA was 2.96. The null and alternative hypothesis would be: [a] Type the letter of the correct option in the box above. A B C D E F The test is: [b] Type the letter of the correct option in the box above. A B C two-tailed left-tailed right-tailed   The test statistic is [d] (to 2 decimals) The critical value is:  [e] (to 2 decimals) Draw a picture of this graph on your scratch paper.  I will grade the graph after you upload your work. [c] Based on this we [f] A B Fail to reject the null hypothesis Reject the null hypothesis  

IQ is normally distributed with a mean of 100 and a standard…

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95.  Write your answer in percent form. Round to the nearest tenth of a percent. (IQ greater than 95)= [a] % Suppose one individual is randomly chosen. Find the probability that this person has an IQ less than 125. Write your answer in percent form. Round to the nearest tenth of a percent. (IQ less than 125)= [b] In a sample of 800 people, how many people would have an IQ less than 110?  [c] people In a sample of 800 people, how many people would  have an IQ greater than 140? [d] people