99% confidence interval (in inches) for the mean height of a population is 65.37 < mu < 66.83 . This result is based on sample of size 144 the confidence interval 65.57<66.63 obtained from the same sample data, what is the degree of confidence? (Hint you will first need to find the sample mean and sample standard deviation) Select one: A. 92% B. 93% C.95% D.94%

Q: Starting salaries of 110 college graduates who have taken a statistics course have a mean of $42,156…

A: Since the  population standard deviation is unknown, t distribution can be used for the computation…

Q: The mean body mass index (BMI) for boys age 12 is 23.6 kg/m2. An investigator wants to test if the…

A: Given  detect a difference in BMI of 2 kg/m2 standard deviation in BMI is 5.7 kg/m2.   Asume that…

Q: Determine the level of confidence in the preparation of the population mean confidence interval if…

A:

Q: AT scores are distributed with a mean of 1,500 and a standard devieation of 287. You are interested…

A: Given that, Critical value: Using the z-table, the critical value at 85% confidence level is ,

Q: How many adults must be randomly selected to estimate the mean FICO (credit rating) score of working…

A: By using the provided information, We have 95% confidence level Margin of error = 4 Population…

Q: Determine the margin of error for the confidence interval for the mean: 21+1.2 The margin of error…

A: Confidence Interval formula for mean is given by, =&gt; (X bar + - z* sigma/√n) Where X bar is mean.…

Q: According to a local newspaper, students at a local university usually take 4.5 years to graduate. A…

A: 1) Here the parameter is that average number of years required to graduate. Thus, μ=4.5 Claim: A…

Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested…

A:

Q: c= 0.90 sample mean = 65.36 sample standard deviation =2.3658 find out the confidence…

A: Answer -Given,   c= 0.90          then         α = 1-0.90          ⇒       Zα2 = 1.645…

Q: What sample size is needed to estimate the mean white cell blood count ( in cells per microliter)…

A: From the provided information, Population standard deviation (σ) = 2.5 Confidence level = 90% Margin…

Q: Assume that females have pulse rates that are normally distributed with a mean of p=75.0 beats per…

A: 1) c) Since the original population has a normal distribution, the distribution of a sample means…

Q: We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51…

A: Given data,x=1.1σ=4.9n=51z value at 90% confidence is Zc=1.645

Q: One year, the mean age of an inmate on death row was 40.3 years. A sociologist wondered whether the…

A: In a confidence interval, the margin of error measures the amount of sampling error. Margin of error…

Q: An airline claims at the Average number of years of experience of its pilots is 18.3 years. In a…

A:

Q: Pumpkins from a local farmer have a mean weight of 16 pounds with a standard deviation of 2.5…

A: Given information: It is given that, Pumpkins from a local farmer have a mean weight of µ = 16…

Q: Here are summary statistics for randomly selected weights of newborn girls: n = 36, x=3180.6 g, s =…

A: From the above given data the following solution is provided below:

Q: AT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested…

A: It is given that:

Q: Age Differences In a large hospital, a nursing director selected a random sample of 43 registered…

A: Let μ1 for the mean age of the nursing assistants.

Q: SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300. An…

A: We want to find the sample size (n)