Use the given data to find the 95% confidence interval estimate of the population mean u. Assume that the population has a normal distribution. IQ scores of professional athletes: Sample sizen= 25 Mean a = 106 Standard deviation s = 13

Construct a confidence interval for the population mean.  Assume that the population has a normal distribution.  n= 30, x bar = 84.6, s=10.5, 90% confidence.

Use the given data to find the 95% confidence interval estimate of the population mean u. Assume that the population has a normal distribution. IQ scores of professional athletes: Sample size n = 30 Mean x = 106 Standard deviation s = 12

The cheetah is the fastest land mammal and is highly specialized to run down prey. The cheetah often exceeds speeds of 60 miles per hour​ (mph) and is capable of speeds above 72 mph. The accompanying table contains a sample of the top speeds of 35 cheetahs. The sample mean and sample standard deviation of these speeds are 59.59 mph and 4.32 ​mph, respectively. A histogram of the speeds is​ bell-shaped. Complete parts​ (a) through​ (d) below.   LOADING... Click the icon to view the top speeds of cheetahs. a. Is it reasonable to apply the empirical rule to estimate the percentages of observations that lie within​ one, two, and three standard deviations to either side of the​ mean?     A. It is reasonable to apply the empirical rule. The data is quantitative and the histogram of the data is​ bell-shaped; therefore, the empirical rule applies.   B. It is not reasonable to apply the empirical rule. The data is​ quantitative, but the value of k takes on values less than​ 1;…

Pulse Rates of Males Refer to Data Set 1 “Body Data” in Appendix B and use the pulse rates of males. a. Find the mean and standard deviation, and verify that the pulse rates have a distribution that is roughly normal. b. Treating the unrounded values of the mean and standard deviation as parameters, and assuming that male pulse rates are normally distributed, find the pulse rate separating the lowest 2.5% and the pulse rate separating the highest 2.5%. These values could be helpful when physicians try to determine whether pulse rates are significantly low or significantly high.

Use the given data to find the 95% confidence interval estimate of the population mean μ. Assume that the population has a normal distribution. Give your answers to 2 decimal places. IQ scores of professional athletes: Sample size n 25 Mean x = 104 Standard deviation s = 9 = <μ<

The distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inches

Use the given data to find the 95% confidence interval estimate of the population mean ?μ. Assume that the population has a normal distribution. IQ scores of professional athletes: Sample size ?=10n=10Mean ?⎯⎯⎯=103x¯=103Standard deviation ?=12s=12 <?<<μ<

Construct the indicated confidence interval for the population mean u using the​ t-distribution. Assume the population is normally distributed.c​=0.95, x=14.6, s=2.0, n=5

Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?