Find the critical value tc for the confidence level c equals=0.90 and sample size n equals=18 LOADING… Click the icon to view the tdistribution table. Use a tdistribution table to look up the tvalue using the level of confidence c and the degrees of freedom nminus−1. The level of confidence c equals=0.90 is given.
Home
Find the critical value tc for the confidence level c equals=0.90 and sample size n equals=18 LOADING… Click the icon to view the tdistribution table. Use a tdistribution table to look up the tvalue using the level of confidence c and the degrees of freedom nminus−1. The level of confidence c equals=0.90 is given.
feel free to call us +800.241.0630 russ@russellcoder.com
Related Articles



A credit card company claims that the mean credit card debt for individuals is greater than $ 5000. You want to test this claim. You find that a random sample of 30 cardholders has a mean credit card balance of $ 5202 and a standard deviation of $ 600. At alpha equals 0.01, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed.
russellc, , Statistics, 0
see excel spreadsheet. This your answer

Find the minimum sample size n needed to estimate p for the given values of c, a, and E.
russellc, , Statistics, 0
c = 0.90. a = 9.9. and E = 2 Answer = 67

Find the margin of error for the given values of c, sigma, and n.
russellc, , Statistics, 0
c = 0.95. a = 2.1, n = 36 Answer 0.686

A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in. (a) Determine the minimum sample size required to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 0.20 in. (b) Repeat part (a) using a population standard deviation of 0.40 in. Which standard deviation requires a larger sample size? Explain.
russellc, , Statistics, 0 
Use the given statement to represent a claim. Write its complement and state which is Upper H 0 and which is Ha. u<431
russellc, , Statistics, 0
Find the complement of the claim. A. Pick the opposite of the "greater that or less than sign"of the...

Use the given statement to represent a claim. Write its complement and state which is Upper H 0 and which is Ha. p < 0.55
russellc, , Statistics, 0
Part A is the answer. A. Pick the opposite of the "equation" see excel spreadsheet. This your answer B....