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 160 men, and 15% own cats. You sample 60 women, and 20% own cats. Find the test statistic

We'd like to know the percentage of people living in California who owns a cell phone. How many people in California must be surveyed in order to be 95% confident that the sample proportion is in error by no more than 4 percentage points?

Solve with steps Please.

Stephanie is trying to figure out the sample size of an experiment. She knows the population SD is 41.5 and the SD of the sample averages is 2.7. What is the sample size of the experiment?

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you​ survey? Assume that you want to be 9595​% confident that the sample percentage is within 2.52.5 percentage points of the true population percentage. Complete parts​ (a) and​ (b) below.

If your height is at 58th percentile in your age group, which of the following statement is TRUE ? Group of answer choices There are 58% people whose heights are the same. There are other 42% people whose height are at or below your height. Your height is 5 feet and 8 inches. There are other 58% people with height at or above your height. There are other 42% people with height at or above your height.

​Claim: Fewer than 91​% of adults have a cell phone. In a reputable poll of 1119 adults, 83​% said that they have a cell phone. Find the value of the test statistic.

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 75% own cats.You sample 100 women, and 60% own cats.Find the test statistic.

Ty In the t eth century, it was a common practice in Southern California for houses to be built with pools in the backyard. For new homes, however, that practice be changing, possibly as a measure to help reduce climate change. A recent study examined a random sample of 164 houses built in Southern California in the twentieth century and an independent, random sample of 83 new houses built in Southern California. The sample of twentieth century houses contained 56 houses with pools, and the sample of new houses contained 26 houses with pools. Based on this survey, can we conclude, at the 0.10 level of significance, that the proportion p₁ of all Southern California twentieth century houses that were built with pools is greater than the proportion p, of all new Southern California houses that were built with pools? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts…

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.