Create a 90% confidence interval for a population proportion from a sample of size 86 with sample 39 proportion p = 86 [three decimal accuracy] [three decimal accuracy]

Q: mple of 400 items is found to have mean of 82 and standard deviation is 18. Find 95% confidence…

A: Given: Sample mean x¯=82     Sample standard deviation (s) = 18 Sample size (n) = 400 Confidence…

Q: What is the minimum sample size necessary to construct a 90% confidence interval for with a margin…

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Q: A body mass index (BMI) between 20 and 25 indicates a normal weight. In a random survey of 763…

A: Given that We have to find the 95% confidence interval for the difference between the two groups A…

Q: There is a study to be done on the mean duration of phd students at small universities. What is the…

A: The standard deviation is 42 months, the margin of error is 12 months and confidence level is 99%.

Q: What is the talpha/2 value to use for calculating a confidence interval from a sample of size 45…

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Q: Give a 90%, 95% and 99% confidence interval of the mean weight of fresh orange if 100 randomly…

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Q: What is the smallest sample size

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Q: The total of individual weights of garbage discarded by 17 households in one week is normally…

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Q: find the 99% confidence interval of the mean number of miles driven per day by all truckers

A: It is given that  Average = 540 Population standard deviation = 40 Sample size = 90

Q: With an 80% confidence for sample proportion 46 and sample size 29, what is the upper confidence…

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Q: Suppose that the amount of time spend by working student weekly is normally distributed with the…

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Q: What is the critical value t* for constructing a 95% confidence interval for a mean with 8 degrees…

A: Given data,α=0.05n=8df=n-1=7t-critical value =?

Q: A random sample of 56 fluorescent light bulbs has a mean life of 645 hours and assume that the…

A: Given,sample size(n)=56sample mean(x¯)=645population standard…

Q: An agriculture researcher plants twenty five plots with a new variety of corn. The average yielded…

A: Given that,   Critical value: By using the z-tables, the critical value at 10% level of…

Q: Below is a 75% confidence interval for a population proportion from a sample of size 90 with sample…

A: Given data,p=5990 =0.66n=90z-value at 75% confidence is Zc=1.150Margin of error(E)=?

Q: Suppose that a garage samples 21 customers. They find the average time for there oil change is 4,305…

A: The objective of this question is to find the 90% confidence interval of the true mean of the time…

Q: Determine the most conservative sample size for 95% confidence interval estimar of the population…

A: Given data, E=0.04 z-value at 95% confidence is Zc=1.96 Let proportion be p=0.50 n=?

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.