50 people are selected randomly from a certain population and it is found that 13 people in the sample are over 6 feet tall. What is the point estimate of the proportion of people in the population who are over 6 feet tall? Group of answer choices 0.190 0.740 0.500 0.260

Use the values on the number line to find the sampling error.   x=4.8 μ=5.61   The sampling error is=

Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones assume that you want 99% confidence that your area is no more than 0.045

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 81%. You would like to be 99% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required? Do not round mid- calculation. n =

K Use the results from a survey of a simple random sample of 1278 adults. Among the 1278 respondents, 68% rated 3 of adults rate themselves as above average themselves as above average drivers. We want to test the claim that drivers. Complete parts (a) through (c). 5 869 (Round to the nearest whole number as needed.) b. Identify the sample proportion and use the symbol that represents it. D = 0.68 (Type an integer or a decimal rounded to two decimal places as needed.) c. For the hypothesis test, identify the value used for the population proportion and use the symbol that represents it. (Type an integer or a decimal rounded to two decimal places as needed.)

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 32%. You would like to be 99% confident that your estimate is within 4.5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.n =

A sample of 2600 people were asked if they felt "good" about the economy. A 95% CI for the proportion who answer 'yes' is: 0.54 < p < 0.62 Many textbooks use the symbol p for the sample proportion. What is p in this problem? Submit Question Previous

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportiòn is approximately 85%. You would like to be 99% confident that your estimate is within 2% of the true population proportion. How large of a sample size is required? Do not round mid-calculation. n =

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 89%. You would like to be 99% confident that your estimate is within 2.5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.n =

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 90​% confident that the sample percentage is within 4.54.5 percentage points of the true population percentage. Complete parts​ (a) and​ (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats.   nequals=334 ​(Round up to the nearest​ integer.) b. Assume that a prior survey suggests that about 31​% of air passengers prefer an aisle seat.   nequals=nothing ​(Round up to the nearest​ integer.)