Find the confidence level related to the critical value Za/2=2.807 O 1.2% 99.7% 99.5% 95.5%

Q: For a confidence level of 80% with a sample size of 22, find the critical t value.

A: Given information- Sample size, n = 22 Confidence level, c = 0.80 So, significance level (α) = 0.2…

Q: Find the critical value z α 2corresponding to a 86% confidence level.

A:

Q: n=11, ¯x¯(x-bar)=45, and s=8, construct a confidence interval at a 80% confidence level. Assume the…

A: A confidence interval is an interval (corresponding to the kind of interval estimators) that has the…

Q: Express the confidence interval 48.9%±8.8%48.9%±8.8% in interval form.

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Q: r a confidence level of 95% with a sample size of 30, find the critical t value

A: given data, CI=0.95α=1-0.95=0.05n=30df=n-1=30-1=29ctitical t- value =?

Q: Find the critical z a/2 that corresponds to a degree of confidence of 91%

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Q: For a confidence level of 90% with a sample size of 10, find the critical t value.

A: n = 10 Degrees of freedom = df = n - 1 = 10 - 1 = 9 At 90% confidence level the t is ,

Q: Express the confidence interval 27.1%±8.5%27.1%±8.5% in interval form.

A: The given confidence interval is 27.1%±8.5%.

Q: For a confidence level of 80% with a sample size of 8, find the critical t value.

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Q: Express the confidence interval 30%±3.2%30%±3.2% in interval form

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Q: confidence level of 99% with a sample size of 28, find the critical t value.

A: Given data, Sample size n=28 confidence level =99% =0.01 find the critical t value.

Q: For a confidence level of 90% with a sample size of 23, find the critical t value.

A: Given the data; n=23Level of significance=0.10

Q: Express the confidence interval 46.7%±5.1%46.7%±5.1% in interval form.

A:

Q: For a confidence level of 90% with a sample size of 31, find the critical t value.

A: Refer to the t-distribution table and look for t value corresponding to degrees of freedom=30 &…

Q: Express the confidence interval 44.1%±7.6%44.1%±7.6% in interval form.

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Q: For a confidence level of 95% with a sample size of 18, find the critical t value.

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Q: Find the critical value, tc, for confidence level = 0.95 and n =12. Round to 3 decimal

A: The confidence level = 0.95 and n =12 Degree of freedom =df =n-1

Q: Express the confidence interval 27.3%±8.3%27.3%±8.3% in interval form.

A: Given that, Confidence Interval = 27.3% ± 8.3%

Q: For a confidence level of 90% with a sample size of 16, find the critical t value.

A: The sample size is n = 16.

Q: A 99% confidence interval (with n = 1, 018) estimates the actual mean amount of internet usage a…

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Q: Express the confidence interval 71.5%±6.9%71.5%±6.9% in interval form.

A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: For a confidence level of 98% with a sample size of 17, find the critical t value.

A: Given: Sample size = n = 17, Significance level (alpha) = 1 - 0.98 = 0.02.

Q: For a confidence level of 98% with a sample size of 13, find the critical t value.

A: We have to find critical value of t.

Q: For a confidence level of 99% with a sample size of 27, find the critical t value.

A: We have confidence level C=99%=0.99 Sample size n=27  then to find critical t value