A survey was taken to determine the proportion of recent BCIT Marketing graduates who achieved a...
A survey was taken to determine the proportion of recent BCIT Marketing graduates who achieved a starting salary of at least $50,000 per year. A random sample of 130 graduates resulted in a confidence interval of 15% < II <33%. What is the confidence level used for this estimate of the population proportion? Use z, not t Give the confidence level as a percent (without the % symbol), rounded to the nearest whole percent Number
A survey was taken to determine the proportion of recent BCIT Marketing graduates who achieved a starting salary of at least $50,000 per year. A random sample of 90 graduates resulted in a confidence interval of 11% SIIS 36%. What is the confidence level used for this estimate of the population proportion? Use z, not t Give the confidence level as a percent (without the % symbol), rounded to the nearest whole percent: Number
A survey was taken to determine the proportion of recent BCIT Marketing graduates who achieved a starting salary of at least $50,000 per year. A random sample of 100 graduates resulted in a confidence interval of 12% ≤Π≤ 36%. What is the confidence level used for this estimate of the population proportion? Use z, not t Give the confidence level as a percent (without the % symbol), rounded to the nearest whole percent:
A survey of recent graduates of Bachelor's degrees showed that 142 smoke and 508 do not smoke. Estimate the value of the true proportion that smoke using a point estimate. Determine a 95% confidence interval for the true proportion of recent graduates of Bachelor's degrees that smokes. 95% CI: ANSWER to ANSWER
Annual salaries for college graduates with degrees in marketing are generally expected to be between $39,000 and $53,200. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. (Round your answers up to the nearest whole number.) What is the planning value for the population standard deviation? (a) How large a sample should be taken if the desired margin of error is $600? (b) How large a sample should be taken if the desired...
9. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a population standard deviation of three hours, what is the required sample size if the error should be less than a half hour with a 99% level of confidence? 10.University officials say that at least 70% of the voting student population supports a fee increase. If the 95% confidence interval estimating the...
(1 point) Starting salaries of 110 college graduates who have taken a statistics course have a mean of $42,249. Suppose the distribution of this population is approximately normal and has a standard deviation of $10,823. Using a 93% confidence level, find both of the following: (NOTE: Do not use commas or dollar signs in your answers.) (a) The margin of error: ? (b) The confidence interval for the mean μ: ? <μ< ?
I need help with stats еBook Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $10,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. a. What is the planning value for the population standard deviation? b. How large a sample should be taken if the desired margin of error is $300? Round your answer to next whole number. $150? $110? c. Would...
(2 pts) Starting salaries of 140 college graduates who have taken a statistics course have a mean of $44,102. Suppose the distribution of this population is approximately normal and has a standard deviation of $9,696. Using a 90% confidence level, find both of the following (NOTE: Do not use commas nor dollar signs in your answers.) (a) The bound on the estimate is (b) The confidence interval for the mean u
{Exercise 8.27 (Algorithmic)}. Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $40,000 and $50,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. What is the planning value for the population standard deviation (to the nearest whole number)? 3750 How large a sample should be taken if the desired margin of error is as shown below to the nearest whole number)? a. $500? 216...