Testing:H0:μ=43.475H0:μ=43.475H1:μ>43.475H1:μ>43.475Your sample consists of 40 subjects, with a mean of 44.9 and standard deviation of 4.45.Calculate the test statistic, rounded to 2 decimal places.

Q: Test the claim that the mean age of the population in Sin City is less than 26 years. Sample data…

A: Solution: Let X be the age. From the given information, x-bar = 24.4 years, S=9.2 years and n=25.

Q: om's commuting time from his residence in Carmel to the IUPUI campus has a normal distribution.  The…

A: Given that  The Tom's commuting time from his residence in Carmel to the IUPUI campus has a normal…

Q: Calculate the z-score. The amount of advertising per hour of broadcast time has an average of 17…

A: From the provided information, Mean (µ) = 17 minutes Standard deviation (σ) = 2.7 minutes X~N (17,…

Q: esting: H0:μ=31.07 H1:μ>31.07 Your sample consists of 27 subjects, with a mean of 32 and standard…

A: Assume that μ defines the true population mean.

Q: 2. According size in the United States is normally distributed with a mean µ = 2392 square feet and…

A:

Q: determine the percentile ranks (from their respective z-scores) using the normal curve for Teachers…

A: We want to find z value for given data

Q: Determine the weight of the students before and during the quarantine. Did the students lose more…

A: H0:μ1=μ2H1:μ1<μ2

Q: z-score Percentile z-score Percentile z-score Percentile -3.0 0.13 -2.0 2.28 -1.0 15.87 -2.9 0.19…

A: It is given that  Mean = 24.8 Standard deviation = 2.5 Z-Score, Z = ( X - μ )/σ

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: distribution of the number of dill pickle spears in a gallon container is approximately normal with…

A:

Q: of 1.95 liters. Can you conclude that the mean FEV1 in the high-pollution community differs from 2.1…

A: Given : Population Standard Deviation (σ)(\sigma) = 0.4 Sample Size (n)(n) = 54 Sample Mean…

Q: Testing: H0:μ=22.43H0:μ=22.43 H1:μ≠22.43H1:μ≠22.43 Your sample consists of 403 subjects, with a…

A: Null and alternative hypothesis is- H0:μ=22.43Ha:μ≠22.43Level of significance=0.05 Test statistic…

Q: The amount of advertising per hour of broadcast time has an average of 17 minutes and a standard…

A:

Q: Demand for computer chips is normally distributed with average 10,000 computer chips and a standard…

A:

Q: Testing: H0:μ=5.46 H1:μ≠5.46 Your sample consists of 43 subjects, with a mean of 5.4 and standard…

A: Given : H0 : μ = 5.46H1 : μ ≠ 5.46 n = 43  x¯ = 5.4s = 1.08 t = x¯ - μsn   t = 5.4 - 5.461.0843 t =…

Q: A normal distribution of scores has the following: mean = 120 standard deviation = 20 What range of…

A: given data normal distribution μ = 120σ = 20 for middle 60%  range = ?

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

A:

Q: What percent of babies have a head circumference greater than 14 inches?

A:

Q: Composite scores on the American College Testing (ACT) college entrance exam follow the normal…

A: The following information has been given: Let X is a random variable shows the composite scores on…

Q: C. Find the probability that a randomly selected district had fewer than 1994 votes for President…

A:

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

A:

Q: Birth weights at a local hospital have a Normal distribution, with a mean of 110110 oz and a…

A:

Q: Each year students in a local school district write a national examination. The average on this…

A: Average of a dataset is the mean value of the observations in the data and it is computed by…

Q: alculate the test statistic, rounded to 2 decimal places.

A: Given : n=21 , X-bar=44.1  , s=2.09 , μ0=43.855  Our aim is to find the value of the test statistic.…

Q: Birth weight, in grams, of newborn babies are normally distributed with a mean of 3290 grams and a…

A: Mean=3290gmStandard deviation =520gm

Q: the standard deviation of the data in following distribution: 12 13 14 32 15 21 16 15 17 8 13 20

A:

Q: Square footage of homes are normally distributed with a mean of 1,200 square feet and a standard…

A: Square footage of homes are normally distributed with a mean of 1,200 square feet and a standard…

Q: The amount of sugar was measured for a sample of 30 different breakfast cereals. The sample mean…

A: Given: Sample mean (u)=10.4 Sample standard deviation (σ)=5.3 Number of sample (n)=30 We have to…

Q: Calculate the sample standard deviation, s, for this set of data: 6.3, 6.7, 6.3, 3.6, 8.8, 5.0…

A: Given information: The data is given below. 6.3, 6.7, 6.3, 3.6, 8.8, 5.0 Sample size (n)=6   Find:…

Q: Score for the California Peace Officer Standards and Training test are normally distributed, with a…

A: Given X is normal Distributed with mean µ = 69.6 and standard deviation σ = 11.3 now will use…

Q: What percent of athletes complete the course between 8 and 9 minutes?

A:

Q: scores on an english test are normally distributed with a mean of 31.5 and a standard deviation of…

A: X follows a Normal distribution with mean = 31.5 and S.D = 6.9 Then z=(x-mean)/SD = (x-31.5)/6.9…

Q: Testing: Ho : μ = 36.6 H : μ > 36.6 Your sample consists of 50 subjects, with a mean of 39.1 and…

A: H0:μ=36.6 H1:μ>36.6 sample size(n)=50 Mean(x)=39.1 standard deviation(s)=5

Q: mean 40,756 standard deviation 7000. find the proportion that are greater than 40,000.

A: Mean = 40756Standard deviation = 7000P(X > 40000) = ?

Q: Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the…

A: It is given that mean is 28.766, standard deviation is 3.369, the largest value is 35.100 andthe…

Q: H0:μ=25.735H0:μ=25.735 H1:μ≠25.735H1:μ≠25.735 Your sample consists of 46 subjects, with a mean of…

A:

Q: Home prices in a city have mean = $194,000 and standard deviation = $20,000. For n = 25 randomly…

A: population mean ()=194000standard deviation()=20000sample size(n)=25Mean()=198000

Q: 4.7, 5.0, 5.5, 4.2, 5.5, 5.9, 4.7, 5.4, 3.8 - samples of % peroxide in samples taken. determine the…

A:

Q: 2. Hypothesis: College students sleep less than the recommended 8 hours. Data: Sample mean (X) =…

A: Given data: Sample mean, X¯=7.25 Sample standard deviation, SX=2.1 Sample size, N = 25 Let the level…

Q: Please tapy answer  The director of admission at a large university advises parents of incoming…

A: given data n = 100x¯ =3154s = 430claim : μ >3000

Q: (a) Find the marginal densities g(x), h(y), and the conditional density f(y|z). (b) Find the…

A:

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.