Find the critical value used for a 98% confidence interval for a proportion. Round to two decimal places and give the positive critical value.

Q: Find the Confidence interval for the true Population Mean if a sample of 50 has a mean of 26.8 and a…

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Q: Assume that population mean is to be estimated from the sample described. Use the sample results to…

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Q: Find the margin of error for each data from certain populations. 3. 45, 56, 61, 88, 91, 64, 38, 79,…

A: Given data: Confidence leval = 90% To find margin of error

Q: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

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Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Lower bound=15, Upper bound=27

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

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Q: You plan to build a 95% confidence interval estimate of the mean of a large population. You want a…

A: Givenconfidence level=95%Margin of error(E)=10standard deviation(σ)=200

Q: Construct the 99% confidence interval for the difference when 3-47688, -318.32, -42.11, -2680, -19,…

A: Test hypothesisNull Hypothesis H0: μ1=μ2Alternative Hypothesis Ha: μ1≠μ2For group 1 Sample size…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…

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Q: You would like to estimate the variance and standard deviation for credit scores based on FICO.…

A: Construct the 95% confidence interval estimate for the variance of credit scores Obtain the critical…

Q: Use the t-table or any statistical tool and report the t-score that you multiple by the standard…

A: Excel: The confidence level is 95%. Sample size is 5. Degrees of freedom is 5-1= 4. The t-score can…

Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

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