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- Thirty-five percent of all Americans drink bottled water more than once a week (Natural resources Defense Council, December 4, 2015). Suppose you have been hired by the Natural Resources Defence Council to investigate bottled water consumption in St. Paul. You plan to select a sample of St. Paulites to estimate the proportion who drink bottled water more than once a week. Assume the popluation proportion of St. Paulites who drink bottled water more than once a week is 0.35 , the same as the overall proportion of Americans who drink bottled water more than once a week. Suppose you select a sample of 540 St. Paulites. Show the sampling distribution of “p with a line over it” (to 4 decimals). E(p with a line over it) = 0` p with a line over it = Based upon a sample of 540 St. Paulites, what is the probability that the sample proportion will be within 0.08 of the population proportion (to 4 decimals). Probability = Suppose you select a sample of 190 St. Paulites. Show the sampling…A coach is interested in how many slam dunks the average college freshman at his university can do. Ten volunteers from the senior class step forward. After observing their performance, the coach concluded that college seniors can do an average of 10 slam dunks in a row without missing. what is the sample? what is the population?Thirty two percent of all americans drink bottled water more than once a week (national resources fefence council,December 4,2015). Suppose you ahve been hired by the natural resources defense council to investigate bottled water consumption in st. Paul. You paln to select a sample of st. Paulities to estimate the proportion who drink bottled water more than once a week. Assume the population pro6od st. Paulities who drink bottles water more than once a week is 0.32, the same as the overall proportion of Americans whp drink bottled water more than once a week. Use z table A. Suppose you select a sample of 530 st. Paulities. Show the sampling distribution of p to 4 decimal. E(p) = .32 Op= ? B. Based upon a sample of 540 st. Paulities, what is the probability that the sample proportion will br within 0.08 of the population proportion to 4 decimal. Probability =? C. Suppose you sel6a samole of 190 st. Paulities. Show the sampling distribution of p to 4 decimals. E(p) = 0.32 Op= ?…
- 34. How Teenagers Listen to Music. For its Music 360 survey, Nielsen Co. asked teen agers and adults how each group has listened to music in the past 12 months. Nearly twothirds of U.S. teenagers under the age of 18 say they use Google Inc.’s video sharing site to listen to music and 35% of the teenagers said they use Pandora Media Inc.’s custom online radio service (The Wall Street Journal). Suppose 10 teenagers are selected randomly to be interviewed about how they listen to music. a. Is randomly selecting 10 teenagers and asking whether or not they use Pandora Media Inc.’s online service a binomial experiment? b. What is the probability that none of the 10 teenagers uses Pandora Media Inc.’s online radio service? c. What is the probability that 4 of the 10 teenagers use Pandora Media Inc.’s online radio service? d. What is the probability that at least 2 of the 10 teenagers use Pandora Media Inc.’s online radio service?A senator wishes to estimate the proportion of United States voters who favor abolishing the electoral college. how large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 3%?Thirty-seven percent of all Americans drink bottled water more than once a week (Natural resources Defense Council, December 4, 2015). Suppose you have been hired by the Natural Resources Defence Council to investigate bottled water consumption in St. Paul. You plan to select a sample of St. Paulites to estimate the proportion who drink bottled water more than once a week. Assume the popluation proportion of St. Paulites who drink bottled water more than once a week is 0.37, the same as the overall proportion of Americans who drink bottled water more than once a week. Use z-table. a. Suppose you select a sample of 540 St.Paulites. Show the sampling distribution of (to 4 decimals).E(p) = __________σ = _________ b. Based upon a sample of 540 St. Paulites, what is the probability that the sample proportion will be within 0.01 of the population proportion (to 4 decimals).probability = _________ c. Suppose you select a sample of 150 St.Paulites. Show the sampling distribution of p (to 4…
- Describe a method for getting a fair and unbiased simple random sample of 12 people if you have a group of 200 people to choose from.Thirty-three percent of all Americans drink bottled water more than once a week (Natural resources Defense Council, December 4, 2015). Suppose you have been hired by the Natural Resources Defence Council to investigate bottled water consumption in St. Paul. You plan to select a sample of St. Paulites to estimate the proportion who drink bottled water more than once a week. Assume the popluation proportion of St. Paulites who drink bottled water more than once a week is 0.33, the same as the overall proportion of Americans who drink bottled water more than once a week. Use z-table. a. Suppose you select a sample of 540 St.Paulites. Show the sampling distribution of p (to 4 decimals). E(p) .3300 Op = .0332 b. Based upon a sample of 540 St. Paulites, what is the probability that the sample proportion will be within 0.06 of the population proportion (to 4 decimals). probability c. Suppose you select a sample of 150 St.Paulites. Show the sampling distribution of p (to 4 decimals). E(p) =…According to the National Center for Education Statistics, 43% of the college students work full time. A survey of 900 randomly selected college students is to be conducted. For such groups of 900, would it be unusual to get 735 college students who work fulltime?
- A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.) Part 2 b) Assume that a recent survey suggests that about 90% of computers use a new operating system. n=enter your response here (Round up to the nearest integer.) Part 3A researcher wants to calculate the prevalence of Alzheimer's among members of a specific community who are 65 years of age and older. The researcher needs to know how many individuals who are 65 years of age or older need to be recruited for the study to ensure the estimated prevalence will be within 1.0% of the true proportion. Calculate the sample size needed by the researcher if a national study has shown 11.11% of individuals 65 years of age have Alzheimer's. Tip: do not assume p = 0.50Does the Midwest, or Northeast, seem to have a higher percent of graduates taking the SAT? • = Midwest states + = Northeast states OH +. IN 20 40 60 80 100 Percent of graduates taking the SAT State mean SAT mathematics score 450 550 009 059