Question

Notify Me Bookmark

Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many adults must be randomly selected to estimate the mean FICO (credit rating) score of working adults in a country? We want 90% confidence that the sample mean is within 3 points of the population mean, and the population standard deviation is 65. The minimum sample size required is adults. (Round up to the nearest whole number.)

Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many adults must be randomly selected to estimate the mean FICO (credit rating) score of working adults in a country? We want 90% confidence that the sample mean is within 3 points of the population mean, and the population standard deviation is 65. The minimum sample size required is adults. (Round up to the nearest whole number.)

Image text
Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many adults must be randomly selected to estimate the mean FICO (credit rating) score of working adults in a country? We want 90% confidence that the sample mean is within 3 points of the population mean, and the population standard deviation is 65. The minimum sample size required is adults. (Round up to the nearest whole number.)

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of error: 0.03; confidence level 95%; pˆ and qˆ unknown n = (Round up to the nearest integer.)
Solution
0 0

Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of error: eight percentage points; confidence level 95%; from a prior study, pˆ is estimated by the decimal equivalent of 52% n = (Round up to the nearest integer.)
Solution
0 0

The heights of 1000 students are approximately normally distributed with a mean of 172.6 centimeters and a standard deviation of 7.2 centimeters. Suppose 300 random samples of size 25 are drawn from this population and the means recorded to the nearest tenth of a centimeter. Complete parts (a) through (c) below. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. (a) Determine the mean and standard deviation of the sampling distribution of X¯. The mean is μx― = (Type an integer or a decimal. Do not round.) The standard deviation is σX― = . (Type an integer or a decimal. Do not round.) (b) Determine the expected number of sample means that fall between 169.9 and 173.8 centimeters inclusive. sample means (Round to the nearest whole number as needed.) (c) Determine the expected number of sample means falling below 169.5 centimeters. sample means (Round to the nearest whole number as needed.)
Solution
0 0