Suppose you are interested in knowing the average cholesterol level of all women between the ages of 21 and 30 who live in College Station. Everyone in a class (75 students) takes a random sample of 50 females in the College Station area between the ages of 21 and 30. Each person calculates the average cholesterol in their sample. Jenna is one of the students in this class and she makes a histogram of the 50 cholesterol levels in her sample. What kind of distribution would be displayed in Jenna’s histogram

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10