H0:p=0.89 H1:p>0.89 Your sample consists of 61 subjects, with 55 successes. Calculate the test statistic, rounded to 2 decimal places z=

What is the P(t >  -1.8) with a sample size of 10.

A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period.   Single Policyholders Married Policyholders  n1=550  n2=1,000 Number making claims = 110 Number making claims = 150   a. Use a=0.05 Test to determine whether the claim rates differ between single and married male policyholders. z-value  (to 2 decimals) p-value  (to 4 decimals)   b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number. (  ,   )

Stress at work: In a poll about work,  51%  of respondents said that their jobs were sometimes or always stressful. Eleven workers are chosen at random.What is the mean number who find their jobs stressful in a sample of  11  workers? Round the answer to two decimal places.

For a special pre–New Year’s Eve show, a radio station personality has invited a small panel of prominent local citizens to help demonstrate to listeners the adverse effect of alcohol on reaction time. The reaction times (in seconds) before and after consuming four drinks are in data below. At the 0.005 level, has the program host made his point? Identify and interpret the p-value for the test.   Data:   Subject Before After 1 0.32 0.39 2 0.39 0.44 3 0.36 0.49 4 0.41 0.53 5 0.37 0.46 6 0.42 0.52 7 0.41 0.52 8 0.43 0.46 9 0.39 0.55 10 0.41 0.52 11 0.35 0.45 12 0.42 0.41 13 0.32 0.54 14 0.39 0.46 15 0.41 0.53 16 0.33 0.54 17 0.43 0.46 18 0.42 0.43 19 0.41 0.52 20 0.35 0.52 21 0.39 0.41 22 0.39 0.44 23 0.32 0.50 24 0.33 0.53 25 0.31 0.45 26 0.35 0.45 27 0.31 0.45 28 0.32 0.48 29 0.38 0.54 30 0.37 0.46 31 0.39 0.49 32 0.30 0.51 33 0.40 0.49 34 0.41 0.50 35 0.41 0.53 36 0.35 0.47 37 0.37 0.51 38 0.41 0.46

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.

​Claim: Fewer than 95​% of adults have a cell phone. In a reputable poll of 1152 ​adults, 85​% said that they have a cell phone. Find the value of the test statistic. (Round to two decimal places as needed)

K Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 582 randomly selected adults showed that 57% of them would erase all of their personal information online if they could. Find the value of the test statistic The value of the test statistic is (Round to two decimal places as needed.).