Read the critical z value from the normal distribution table and choose the correct answer. For a two-tailed test using a = .0802, z =

Q: You are running a 1 Sample T Test with the following data.  What is your degree of freedom? Sample:…

A: The formula for the degrees of freedom using one sample t test is, Where,   n denotes the number of…

Q: mal distribution.Use decimal places. First z-score = [ Note: If it di

A: Given,  P(-z<Z<z)= 73% = 0.73    i.e. Middle area under the standard normal curve is 0.73

Q: The test statistic of z = 1.96 is obtained when testing the claim that p > 0.43. This is a…

A:

Q: The test statistic of z = - 2.88 is obtained when testing the claim that p# 0.375. This is a…

A: We have given that Test Statistics z = -2.88 Claim : p ≠ 0.375 (two tailed test) Significance level…

Q: The test statistic of z= -1.77 is obtained when testing the claim that p *0.619. This is a…

A: Given: Test statistic z=-1.77  The Null Hypothesis: H0: p=0.619 The Alternative Hypothesis:  H1:…

Q: find the 2.5th percentile of a t distribution with 10 degrees of freedom

A: Given:Percentile = 2.5Type of distribution = tDegrees of freedom = 10 We are asked to find the…

Q: given a normal distribution curve, what is the area below a z-score of -1.2?

A: Given that, The z-score value is -1.2.

Q: The test statistic of z=2.19 is obtained when testing the claim that p>0.4. Identify the…

A: (1) State the hypotheses. That is, the population proportion equals 0.40. That is, the population…

Q: A mechanical component is subject to a load that has a mean value of 1500 N and a standard deviation…

A:

Q: According to data from the 2010 United States Census, 71.6% of the total United States population…

A:

Q: researcher expects a treatment to produce an increase in the population mean. Assuming a normal…

A: Here, we know that for t-critical, we will use z-standard normal table. At 1%  and 5 %.

Q: Find the Z-score that describes the following proportions under the normal curve (within 0.01…

A: We have given that,  Z from the normal distribution with top 75% of scores then we will find the Z-…

Q: To find the impact of students working while enrolled in classes, a researcher carried out a survey…

A: A statistic is the estimator of a particular parameter of the population.For eg. The sample mean is…

Q: Find the z-scores that separates the middle 54 % of the distribution from the area in the tail of…

A: Solution: Let

Q: The test statistic of z= -1.23 is obtained when testing the claim that p *0.587. This is a…

A: Test statistic z=-1.23  Level of significance=0.10  Claim p≠0.587  We have to find the critical…

Q: The heights of adult American men can be modeled by a normal distribution with mean μ = 69 inches…

A: The heights of adult American men can be modeled by a normal distribution with mean μ = 69 inches…

Q: Salaries of 41 college graduates who took a statistics course in college have a mean, x, of $68,300.…

A: It is given that the mean is 68,300 and the population standard deviation is 17,034.

Q: Find the Z-score that describes the following proportions under the normal curve (within 0.01…

A: The area is middle 20%.

Q: Do green and blue chocolate M&M candies have equal weight in a package of M&Ms? Random samples of…

A: A t-test  is a type of inferential statistic used to determine if there is a significant difference…

Q: Suppose that X has a normal distribution with the data value 44.2? If necessary, round to three…

A: Mean()=43Standard deviation()=and data value(X)=44.2

Q: Suppose male heights follow a normal distribution with μ = 178.4 cm and σ = 7.6 cm. What is the 99th…

A: It is given that the male heights follow normal distribution with mean 178.4 cm and standard…

Q: What is the Discrete Variable Standard Deviation for the following numbers:Sample size is 38 with a…

A: Step 1:Given that :Sample size (n)=38 Probability (p) =0.21We need to find out the standard…

Q: What is the Standard Deviation for the following numbers: Variance = 251

A: It is given that  The variance is 251.

Q: Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 22.9…

A: Step 1:Given data : Mean μ=22.9Standard deviation σ=2.8Sample size : n=33 Step 2:Since the…

Q: A large company has many employees and the annual salaries of those employees follow a normal…

A:

Q: (d) 24th (e) 14th

A:

Q: Company ABC's customer retentions per site are normally distributed with a standard deviation of 21…

A: Solution: Let X be the Company ABC’s customer retentions per site. From the given information, X…

Q: As part of your work for an environmental group, you want to see if the mean amount of waste…

A: Given Information: Hypothesized mean = 5 pounds Sample size = 27 Sample mean = 4.4 pounds Sample…

Q: of word recall are given below. Use a 0.05 significance level to test the claim that the samples are…

A: The following null and alternative hypotheses need to be tested: This corresponds to a two-tailed…

Q: What is the Standard Deviation for the following numbers: Variance = 284

A:

Q: What is the formula for the standard error of the normal approximation to the p distribution. P=

A: We know that- The standard error is the standard deviation of its sampling distribution. It also…

Q: Find the percent of the total area under the standard normal curve between the following​ z-scores.…

A: