Express the confidence interval 18.4% + 5.6 % in interval form. 0.128,0.24 X Express the answer in decimal format (do not enter as percents).Score on
Express the confidence interval 18.4% + 5.6 % in interval form. 0.128,0.24 X Express the answer in decimal format (do not enter as percents).Score on last try: 3.6 of 6 pts. See Details for more. > Next question You can retry this question below A student was asked to find a 98% confidence interval for widget width using data from a random sample of size n = 23. Which of the following is a correct interpretation of the interval 15 Next question You can retry this question below You measure 37 watermelons' weights, and find they have a mean weight of 70 ounces. Assume the population standard deviation is 12 ounces. Based on this, construct a 9% confidence interval for the true population mean watermelon weight. Round your answers to two decimal places. 66.61 Next question You can retry this question below 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 180 men, and 55% own cats. You sample 100 women, and 15% own cats. Find the test statistic, rounded to two decimal places. 0.79In a survey funded by the UW school of medicine, 750 of 1,000 adult Seattle residents said they did not believe they could contract a sexually transmitted infection (STI) and 893 of 1, 123 Denver residents said they did not believe they could contract an (STI). Construct a 95% confidence interval of the difference in proportions of Seattle and Denver residents who do not believe they could contract a STI. (Use a z score of 1.96 for your computations.) O (.0809, .0095) O (-.0809, -.0095) O (-.0809, .0095) O (-.0095, .0809)Score on last try: 0 of 8 pts. See Details for more. > Next question You can retry this question below An interior decorator wants to compare the prices at 2 stores to see if their mean prices are significantly different. She gathers the prices at each store on the same 26 items (from bath mats to window curtains). What kind of hypotheisis test is this? O 1 Mean t-test O 2 Means Matched Pairs t-test O 1 Proportion z-test O 2 Proportions z-test 2 Independent Means t-test Which hypotheses do we want to test? O Ho: H1 = H2 HA: H1 > H2 Ho: H1 = H2 HA: H1 = H2 O Ho: H1 = H2 HA: H1 = H2 O Ho: H1 = H2 HA: H1 = H2 X. Question 14 0/6 pts 3 0 Details You are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats. You sample 200 men, and 90% own cats. You sample 50 women, and 10% own cats. Find the pooled proportion, p (p-bar), as a decimal, rounded to two decimal places. To do this, first compute the number of "successes" of men, x1, and women, x2. These need to be integers, so round, if necessary. (A simple calculator is sufficient to do this computation.) (You do not need to compute the hypothesis test.)
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