Suppose a sample of O-rings was obtained and the wall thickness (in inches) of each was recorded. Use a normal probability plot to assess whether the sample data could have come from a population that is normally distributed.. Click here to view the table of critical values for normal probability plots Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. 0.180 0.188 0.192 0.199 0.213 0.218 0.227 0.240 0.264 0.266 0.287 0.288 0.303 0.304 0.317 0.308 Using the correlation coefficient of the normal probability plot, is it reasonable to conclude that the population is normally distributed? Select the correct choice below and fill in the answer boxes within your choice. (Round to three decimal places as needed.) OA. Yes. The correlation between the expected z-scores and the observed data, data come from a normal population. OB. No. The correlation between the expected z-scores and the observed data, that the data come from a normal population. OC. No. The correlation between the expected z-scores and the observed data, the data come from a normal population. OD. Yes. The correlation between the expected z-scores and the observed data, , exceeds the critical value, Therefore, it is not reasonable to conclude that the does not exceed the critical value, Therefore, it is not reasonable to conclude , does not exceed the critical value, Therefore, it is reasonable to conclude that exceeds the critical value, Therefore, it is reasonable to conclude that the

An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard deviation of 40 hours. If a sample of 45 bulbs has an average life of 710 hours, find a 96% confidence interval for the population mean of all bulbs produced by this firm. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. The confidence interval is (Round to the nearest integer as needed.) <μ<

An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard deviation of 45 hours. How large a sample is needed if we wish to be 94% confident that our sample mean will be within 12 hours of the true mean? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. ..... The required sample size is (Round up to the nearest whole number as needed.)

Suppose x has a normal distribution with mean ? = 26 and standard deviation ? = 7.Describe the distribution of x values for sample size n = 4. (Round ?x to two decimal places.) ?x =  ?x =  Describe the distribution of x values for sample size n = 16. (Round ?x to two decimal places.) ?x =  ?x =  Describe the distribution of x values for sample size n = 100. (Round ?x to two decimal places.) ?x =  ?x =  How do the x distributions compare for the various samples sizes? The standard deviations are the same, but the means are decreasing with increasing sample size.The standard deviations are the same, but the means are increasing with increasing sample size.    The means are the same, but the standard deviations are decreasing with increasing sample size.The means are the same, but the standard deviations are increasing with increasing sample size.The means and standard deviations are the same regardless of sample size.