I want to estimate the proportion of adults who like sci-fi movies. How many people should I poll to be 96% confident that I am with 1% of the population proportion?
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I want to estimate the proportion of adults who like sci-fi movies. How many people should...
2.) I want to estimate the proportion of people who drink coffee in the morning. How many people should I poll to be 97% confident that I am within 1.5% of the actual proportion? 3.) Repeat #2, but assume that last year the polls showed that 40% drink coffee.
I want to estimate the population mean number of times that adults go to the movies a year. In this prompt, I spoke to 12 different people to find out how many times a year they go to the movies. In this survey, I found that these selected people visited the movies 3,5,2,4,4,2,1,3,4,7,0,1 times a year. Calculate a 90% confidence interval for the population mean.
2. A researcher wishes to estimate the population proportion of adults who are confident in the U.S. banking system. He wishes to estimate the proportion to within 3% with 95% confidence. How many adults should be included in the sample? A. 384 B. 385 C. 73 D. 1068 E. Insufficient information to answer the question
6. How many randomly selected adults must be surveyed to estimate the percentage of adults in ( point) the country who now use the Internet? Assume that you want to be 99% confident that the sample percentage is within 2 percentage points of the true population percentage and that you know nothing about the percentage of adults using the Internet. 16,577 O 4,145 O 2,401 O 613 (l point 7-A recent poll of 1800 people showed that 35% believe gas...
3. The Pew Research Center wishes to estimate the proportion of adults who are aware of Instagram. How many adults must the marketing firm randomly survey if they want to be 96% confident that the proportion of adults who are aware of Instagram is within 3% of the true proportion of adults who are aware of Instagram? Enter answer 4 The mean age of a sample of 40 college students is 23.95 with a standard deviation of 2.55. Assume that...
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.35. You would like to be 96% confident that your esimate is within 2% of the true population proportion. How large of a sample size is required? n=1 Message instructor about this question
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p=0.6. You would like to be 96% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required? Hint: Video [+] n-
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p 0.35. You would like to be 96% confident that your esimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Shouldn't the answer be a WHOLE NUMBER n=2390.171
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99% confident that your esimate is within 1% of the true population proportion. How large of a sample size is required? n =
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.35. You would like to be 96% confident that your esimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Video ) [+] n= 2402 * License Points possible: 1 Unlimited attempts. Score on last attempt: 0. Score in gradebook: 0 Message instructor about this question