Find the critical value used for a 93% confidence interval for standard deviation from a sample of 35. Round to two decimal places and give the right and left critical values.

Q: A sample obtained from a population with a standard deviation of 12 has a standard error of two…

A: Given information- Population standard deviation σ = 12 The standard error (SE) = 2 We have to find…

Q: I have two questions. 1) Will improving customer service result in higher stock prices for the…

A: As per the honor code and the guidelines, we will solve only 1 question.

Q: The mean value of the 130 observation is 17 with standard deviation deviation equal to 0.98. Find…

A:

Q: Find a 90% confidence interval for the population mean, if the sample size is 58, the sample mean is…

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Q: The standard deviation of the weights of elephants is known to be approximately 15 pounds.  We wish…

A: Sample mean = x̅ = 244 Sample size = n = 50 Population S.D = σ = 15 Standard Error = σ/√n  =…

Q: The class mean for the exam was 82 with a standard deviation of 6.  There are 37 students in the…

A: We have given that, Mean = 82 , standard deviation σ = 6  sample size n = 37   Standard error of the…

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: if a sample n = 16, mean = 10.3,standard deviation is 2.6. calculate a 95% confidence interval.

A:

Q: Find the critical t value to use in making a 99% confidence interval for a mean if the sample size…

A: Solution-: Given: n=7,α=0.01 We find the critical t- value to use in making a 99% C.I. for a mean

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A: Given that  Sample size n =23 Sample mean =71 Population standard deviation =11.3

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Q: 1. Exercise: Medical researchers conducted a study to determine whether treadmill exercise could…

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Q: You measure 23 dogs' weights, and find they have a mean weight of 68 ounces. Assume the population…

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Q: Find the critical t value to use in making a 98% confidence interval for a mean if the sample size…

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Q: Find the critical t value to use in making a 90% confidence interval for a mean if the sample size…

A: Given, confidence level = 90.0 Need to find Critical value t

Q: You measure 21 dogs' weights, and find they have a mean weight of 37 ounces. Assume the population…

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Q: Among those taking the Graduate Record Exam, 18 people are randomly selected. This group had a mean…

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Q: Determine the 99.5 percent confidence interval that contains the population variance if the sample…

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Q: Michelle takes a sample of 25 different-gender married couples. In her sample, she found that the…

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Q: A distribution of values is normal with a mean of 103.6 and a standard deviation of 63.6. Find P62,…

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Q: A distribution of values is normal with a mean of 107.8 and a standard deviation of 82.8. Find P70,…

A: given data, normal distribution μ=107.8σ=82.8p70 score  of the class =?

Q: A certain standardized tests math scores have a bell shaped distribution with a mean of 525 and a…

A: GivenMean(μ)=525standard deviation(σ)=105

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Q: MAKE SURE YOU SELECT 2 ANSWERS FOR THIS QUESTION - Type of test and hypothesis. A meteorologist…

A: Given population mean μ=0.46  Population standard deviations σ=0.12

Q: A distribution of values is normal with a mean of 178.9 and a standard deviation of 78.7. Find P37…

A: Given Data : Population Mean,μ = 178.9 Population Standard Deviation,σ = 78.7

Q: please give me answer step by step

A: Step 1: Suppose µ is the population mean commute time of all TCC students. The sample size, sample…

Q: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…

A: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…

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A: It is given that the mean is 8.9 and the standard deviation is 1.1.

Q: The amount of coffee that people drink per day is normally distributed with a mean of 15 ounces and…

A: It is given that, Mean,μ =15 ounces Standard deviation, σ=4.5 ounces

Q: Assume that adults have IQ scores that are normally distributed with a mean of 107 and a standard…

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Q: survey of 18 year old males, the mean weight was 160.5 pounds with a standard deviation of 46.4…

A: given data  normal distribution  μ = 160.5σ = 46.4

Q: A sample of 30 UDM Chemistry students from the College of Science were given an IQ test. The sample…

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A: Here, T - interval is applicable ================= df = n-1

Q: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample…

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Q: A distribution of values is normal with a mean of 134.3 and a standard deviation of 92. Find P16,…

A: P16 is the score separating the bottom 16% from the top 84%. this is the 16th percentile.

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A: From the provided information, The p value of the test statistic is 0.3172. The p value is greater…

Q: You measure 39 turtles' weights, and find they have a mean weight of 30 ounces. Assume the…

A: The mean is 30 and the population standard deviation is 7.8.

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.