The mean score, x, on an aptitude test for a random sample of 6 students was 61. Assuming that a = 16 find the 95 44% confidence intenral fo Eall students taking the test

Q: Is the ideal number of children equal to 2, or higher, or lower than that? For testing that the mean…

A: Null Hypothesis: H0: μ=2.0 Alternative Hypothesis: H1:μ≠2.0 Test statistic:…

Q: A random sample of n=4 scores is selected from a population with mu=80 and standard deviation=20. On…

A:

Q: The minimum sample size needed to estimate a population mean within 2 units with a 95% confidence…

A: Given Information -  Population Standard deviation (σ) = 8 Margin of error (E) = 2 Confidence level…

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: For male:mean(μm)=3262.5standard deviation(σm)=846.7and xm=1500For female:mean(μf)=3063.6standard…

Q: A laboratory technician is interested in the proportion of 1-liter containers used in the lab that…

A:

Q: From a sample with n=32, the mean number of televisions per household is 4 with a standard deviation…

A: Chebyshev’s rule can be used for the large set data. It says that at least 1-1/k2 percentage of the…

Q: An article in a journal for college instructors recently stated that college students spend on…

A:

Q: Use z scores to compare the given values.   Based on sample​ data, newborn males have weights with a…

A: The z-score of a random variable x is defined as follows: z = (x – µ)/σ. Here, µ and σ are the mean…

Q: A population has mean µ = 40 and %3D standard deviation o = 20. What should %3D the sample sizen be…

A:

Q: In a random sample of 5000 UWC students, 2846 claimed to live in one of the campus’s residences.…

A: Given information- Sample size, n = 5000 We have given that out of 5000 UWC students, 2846 claimed…

Q: Suppose heights, in inches, of male orangutans have an unknown distribution with mean 56 and…

A: According to the central limit theorem,

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A:

Q: The confidence level of an interval estimate is denoted by: * O (1-a)x100% 1+a O (1+a)x100% O a When…

A: The symbol α denotes the level of significance.

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: It tells the number of standard deviations the value x is away from the mean.

Q: The distribution of scores on a standardized aptitude test is approximately normal with a mean of…

A: Given data,μ=480σ=95P(X>x)=0.25x=?

Q: From a sample with n=20​, the mean number of televisions per household is 4 with a standard…

A: Given n=20

Q: From a sample with n=16​, the mean number of televisions per household is 4 with a standard…

A: Solution: Let X be the number of televisions per household. From the given information, n=16, σ=1…

Q: Here sample 10 people in a high school to try to predict GPA in 10th grade from GPA in 9th grade.…

A: It is given that the SSE =5.8, sample size (n) is 10 and the regressor is GPA. Therefore, the…

Q: A given distribution has a population mean, µ, of 148 and a population standard deviation, o, of 8.…

A: We given that,  Let given distribution is normal distribution  And population mean(Mu) = 148 and…

Q: From a sample with n=36 the mean duration of a geyser eruption is 3.99 minutes and the the standard…

A: Solution: Let X be the duration of a geyser eruption. From the given information, n=36, µ = 3.99…

Q: A given distribution has a population mean, μ, of 103 and a population standard deviation, σ, of 14.…

A: Given information- Population mean, µ = 103 Population standard deviation, σ = 14 Z-score = -2.67 We…

Q: From a sample with n= 32, the mean duration of a geyser's eruptions is 3.61 minutes and the standard…

A: Given that,  n= 32 ,μ=3.61σ=1.11 The formula of k is, The value of k is,

Q: From a sample with n=36 the mean duration of a geyser's eruptions is 3.21 minutes and the standard…

A:

Q: The mean life of a particular brand of light bulb is 1000 hours and the standard deviation is 50…

A: Introduction: Denote X as the random variable denoting the lifetime of a randomly selected bulb. It…

Q: A sample of 900 members has a mean 3.4 cms and S.D. 2.61 cms. Obtain the 95% confidence limits of…

A:

Q: A college admissions officer indicates that the average GPA of incoming freshmen is normally…

A: Given that, mean =  = 3.30 standard deviation =  = 0.20

Q: A study claims tha.t on average, male high school students spend at least 3.39 hours a day playing…

A: The summary of the statistics is, x¯=4.12,σ=2.05,n=30μ=3.39 The formula for calculating the z-score…

Q: A sample of n=25 scores has a mean of 68. Find the z-score for this sample:   If it was obtained…

A:

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: Given that, mean(μ)=3274.7  (for male) standard deviation(σ)= 627.7  x= 1700  and  mean(μ)=3038.5 (…

Q: Use z scores to compare the given values. Based on sample data, newbom males have weights with a…

A: Consider that the mean and standard deviation of a random variable x are x̄ and s, respectively.…

Q: Use z scores to compare the given values.   Based on sample​ data, newborn males have weights with a…

A:

Q: The scores of a random sample of 100 high school students on a standardized mathematics test in a…

A: Given Data : Sample Size , n= 100 Sample Mean , x̄ = 78.0 population standard…

Q: Determine the sample size required to estimate the mean score on a standardized test within 2 points…

A: Given,margin of error(E)=2standard deviation(s)=15α=1-0.98=0.02α2=0.01Z0.01=2.33      (from Z-table)

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: Given for males : x¯=3204.8 gs=770.8 g Given for females : x¯=3066.5 gs=585.9 g

Q: A survey of 1000 dental patients shows that the average cost of a regular six-month cleaning/ check…

A: The following information has been given: The sample size is n=1000. The mean is μ=150. The standard…

Q: From a sample with n = 16, the mean number of televisions per household is 4 with a standard…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

Q: A population of scores has u = 50 and o = 5. If every score in the population is multiplied by 3,…

A: If a constant value multiplies to each score in distribution, then the mean and standard deviation…

Q: From a sample of 32 eruptions, the mean duration time of the eruptions was 3.32 minutes with a…

A: Chebyshev’s rule: The Chebyshev’s rule states that, for any quantitative data set and any real…

Q: DA DATA SET ENCLUDES 108 BODY TEMPERATURES OF HEALTHY ADULT HUMANS HAVING A MEAN OF 98.3°F AND A…

A: We have to find given confidence interval..

Q: A sample obtained from a population with σ = 12 has a standard error of σx̅ = 2 points. How many…

A: We have given that,  The population standard deviation (sigma) = 12 And standard error (sigmax) = 2…

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: Given: For newborn males: Meanμ=3293.7Standard Deviationσ=551.3 The z-score for X=1700 g is given…

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A:

Q: A population of scores has Mean = 73 and SD = 8. If the distribution is standardized to create a new…

A: Solution-: For original: μ=73, σ=8 For new:  μ=100, σ=20 what are the new values for X = 65 from the…

Q: From a sample with n 36​, the mean duration of a​ geyser's eruptions is 3.82 minutes and the…

A: Solution-: Given: μ=3.82,σ=0.72,n=36 Here, Lower Limit=1.16, Upper Limit=5.98

Q: A sample obtained from a population with σ = 48 has a standard error of σM = 6. How many scores are…

A: Given that, Standard deviation = 48 Standard error = 6

Q: The drainage from a community during a storm is a normal random variable.  The estimated mean flow…

A: From the provided information, Mean (µ) = 1 Standard deviation (σ) = 0.8 X~N (1, 0.8) Here X be a…

Q: A marketing researcher would like to compare the mean amounts that men and women spend on Christmas…

A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Q: Use the scores to compare the given values. Based on sample data, newborn males have weights with a…

A:

Q: A z-score less than O represent an element above than the mean.

A: We know that Z or standard normal distribution has a mean 0 and it is symmetric about 0 and we also…

Q: A quality control expert at a local dairy claims that its cartoons contain more than 64oz of milk a…

A: n = 15 mu = 64 xbar = 65 s = 1.1