In a survey of 641 males ages 1864, 394 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. The 90% confidence interval for the population proportion p is The 95% confidence interval for the population proportion p is Interpret your results of both confidence intervals. Which interval is wider?
Home
In a survey of 641 males ages 1864, 394 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. The 90% confidence interval for the population proportion p is The 95% confidence interval for the population proportion p is Interpret your results of both confidence intervals. Which interval is wider?
feel free to call us +800.241.0630 russ@russellcoder.com
Related Articles

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.
russellc, , Statistics, 0 
Match each Pvalue with the graph that correctly displays its area.
russellc, , Statistics, 0
Pequals=0.2709 Pequals=0.0793 Pequals=0.0286 Pequals=0.0143 see excel spreadsheet. This your answer



or the statement below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. The standard deviation of the base price of a certain type of allterrain vehicle is equal to $305.
russellc, , Statistics, 0
Part A is just stating the the claim numberically with is u =305. Part B = Ho is the...

A random sample of 75 eighth grade students’ scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that the mean score for the state’s eighth graders on this exam is more than 275. Assume that the population standard deviation is 36. At alphaequals0.12, is there enough evidence to support the administrator’s claim? Complete parts (a) through (e).
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

Use the given statement to represent a claim. Write its complement and state which is Upper H 0 and which is Ha. a is not equal to 14
russellc, , Statistics, 0
Part A is the answer. A. Pick the opposite of the "equation" see excel spreadsheet. This your answer B....