Assume that a sample is used to estimate a population mean u. Find the 98% confidence interval for a sample of size 821 with a mean of 56.7 and a standard deviation of 17.5. Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 20 for the population…

A: GIVEN DATA,an IQ test mean is 100 and standard deviationis 20 for the population of normal adults…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10for the population of…

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Q: Assume that a sample is used to estimate a population mean μ. Find the 80% confidence interval for a…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A: Given data,σ=12E=5z-value  at 99% confidence is Zc=2.576n=?

Q: Assume that a sample is used to estimate a population mean μ Find the 90% confidence interval for a…

A: Confidence interval:The (1-α) % confidence interval for population mean µ is given by:

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Finding the value of z at lowest 14-1.08032 ( From Excel =NORM.S.INV(0.14))Finding the value of z at…

Q: Assume that a sample is used to estimate a population mean u. Find the 99.5% confidence interval for…

A: It is given that sample mean is 28.5 and the standard deviation is 18.7.

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population…

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Q: Assume that a sample is used to estimate a population mean μμ. Find the 98% confidence interval for…

A: The random variable X is normally distributed. We have to construct 98% confidence interval for the…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 16 population of normal…

A: Given that  σ = 16E = 4 At 90% the critical value at Zα = 1.645 by standard normal table of Z we…

Q: Assume that a sample is used to estimate a population mean μμ. Find the 80% confidence interval for…

A: Given that, Sample size n=554 Sample mean x¯=64.1 Sample standard deviation s=15.8

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population…

A: The provided data is,

Q: Assume that a sample is used to estimate a population mean μ . Find the 99.5% confidence interval…

A: Given information Sample Standard deviation = 9.4 Sample mean = 16.5 Sample size n = 589 Population…

Q: A psychologist is interested in levels of perceived social connection in grade nine students during…

A: Sum of squares = ∑(xi-x)2=9.5 Number of sample (n) = 6

Q: Assume that a sample is used to estimate a population mean . Find the 95% confidence interval for a…

A: Given datan=293mean=42.5standard deviation=7.8confidence interval=95%

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

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Q: sample of size 1045 with a mean of 33.5 and a standard deviation of 13.5 ri-linear inequality…

A: As the population standard deviation is not known, we will use t-distribution. Given: Xˉ=33.5…

Q: Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a…

A: The information provided in the question are as follows : Sample size (n) = 1017 Sample mean (x̄) =…

Q: Assume that a sample is used to estimate a population mean μμ. Find the 98% confidence interval for…

A: Given information- Sample size, n = 253 Mean systolic blood pressure, x-bar = 76.6 Sample standard…

Q: Assume that a sample is used to estimate a population mean μμ. Find the 98% confidence interval for…

A:

Q: Assume that a sample is used to estimate a population mean μμ. Find the 99% confidence interval for…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 25 for the population…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 15 for the population…

A: Given information Standard deviation σ= 15 Confidence interval = 0.99 Significance level(α) = 1-…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population…

A: Use the MINITAB to obtain the sample size: Procedure: Select Stat > Power and sample size >…

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

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Q: An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population…

A: Since we know population standard deviation, use z-distribution to find z-critical value. Find…

Q: An 1Q test is designed so that the mean is 100 and the standard deviation is 21 for the population…

A: It is given that the confidence level is 0.95, the population standard deviation is 21, and the…

Q: Assume that a sample is used to estimate a population mean u with a long line in front. Find the 90%…

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Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population…

A: Here we need to find the required sample size to estimate the mean IQ score of statistics students.…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A: Answer Given,The confidence interval = 90%The margin of error [E] = 2The mean = 100The standard…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population…

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Q: An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population…

A: The margin of error is 4 and the population standard deviation is 13.

Q: You measure 37 watermelons' weights, and find they ha population standard deviation is 10 ounces.…

A: Given: n = 37 x=51σ=10 The value of z at 95% confidence level is 1.96, which can be obtained by…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 8 for the population of…

A: Given: μ=100σ=8Margin of error, E=2Confidence level=99%

Q: Marketing companies have collected data implying that teenage girls use more ringtones on their…

A: Given n1=n2=20 S1=1.5 S2=0.8

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A: GIVEN DATA 90% ci for meanσ = 12E  = 4 n = ?

Q: Assume that a sample is used to estimate a population mean μ. Find the 90% confidence interval for a…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: Assume that a sample is used to estimate a population mean μμ. Find the 80% confidence interval for…

A: It is given that sample mean is 74.2 and the standard deviation is 7.6.

Q: a population mean μμ. Find the 99.5% confidence interval for a sample of size 867 with a mean of…

A: GIven that, n = 867x¯ = 60.2σ = 21.9 Confidence Interval = 99.5% The degrees of freedom is…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population…

A: Since the population standard deviation is given the critical value from the standard deviation at…

Q: Assume that the population standard deviation is known and decide whether use of the z-interval…

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Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A: compute sample size  n  = (z a/2 *  s.d / me ) ^2z alpha/2 at 0.01 level of significance is = 2.576…

Q: What Values of x the null hypothesis would be rejected. aining intensively for six months, John…

A: We can see that it is a left-tailed test.The calculations for the left critical value is given as…

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.