You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly different from 21%. With H :p + 21% you obtain a test statistic of z = 2.735. Find the p-value accurate to 4 decimal places.

A student who took Stat 2 last semester learns that their overall course score was at the 85th percentile. Assuming that a histogram of all the Stat 2 course scores from last semester follows the normal curve, this means that this student had a score that was how many SDs above the average score? Choose the answer that is closest. Group of answer choices 1.15 1.05 1.10 1.0      PreviousNext

You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly less than 0.82. Your sample data produce the test statistic z = - 2.97 Find the p-value accurate to 4 decimal places.

You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 60 men, and 50% own cats.You sample 140 women, and 20% own cats.Find the test statistic, rounded to two decimal places.

A study done in 1997 showed that 4.2% of mothers smoked cigarettes during their pregnancy. An obstetrician feels that this percentage is higher now. To test this, the obstetrician takes a sample of 200 mothers and finds that 10 of them smoked during their pregnancy. Test the obstetrician's claim at the a=0.05 level of significance. Write your answer in the following form P-Value, Conclusion Example: 0.15, There is not sufficient evidence that the mean weight of pandas is less than 200 pounds. Edit View Insert Format Tools Table 12pt v Paragraph v BIUA e T?u 画① O words ņ V12 96 5n SO F H. B N2

You want to obtain a sample to esimate a population proportion. Based on previous evidence you believe the population proportion is approximately p*=21%. You would loke to be 99.9% confident that you estomate within 1% of the true population proportion. How large of a sample size is required?

A publisher reports that 29%of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 250 found that 26% of the readers owned a particular make of car. Determine the P-value of the test statistic. Round your answer to four decimal places.

In a test of H0: p = 0.40 against Ha: p # 0.40, the sample data yield the test statistics z = 1.78. Find the p-value for this test. Round your answer to 4 decimal places.

Find the value of the test statistic. Round to 3 decimal places. • Claim: The proportion of students using at least one e-book is 23% • Data: x = 56, n = 200 %3! O -1.543 1.879 None of these 1.680 O 1.338

You are conducting a study to see if the typical doctor's salary (in thousands of dollars) is significantly more than 82. Your sample data (n decimal places. 12) produce the test statistic t = 3.24. Find the p-value accurate to 4