You are performing a right-tailed test with test statistic z=1z=1, find the p-value to 4 decimal places

Q: what will be the value of X at the z score =-3 given, mean=10 and standard deviation =2?

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: Around 750 students took an IQ test. The IQ scores follow a normal distribution and has a mean of 85…

A: Given  n=750, X~ N(mu=85, sigma^2=3.5^2) We want to find Z score and probability by using standard…

Q: IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 12. What…

A: It is given that the mean and standard deviation are 100 and 12, respectively.

Q: Q4/ A / Calculate the Quartile Deviation (Q.D) and coefficient of Q.D. for the data: ( 230 , 620 ,…

A: AS per our guidelines we are suppose to answer first question

Q: You just finished statistics class and are eager to collect and analyze your own data! You run out…

A: Since, it is given that,student just finished statistics class to  collect data on the average score…

Q: Where do p-values concentrate?

A: Under the null hypothesis H0 about the unknown distribution of the test statistic, the p value is…

Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?

A: Mean = 45 Standard deviation = 5  Z score =-2.5 We have to find X score  for given data...

Q: What information is provided by the sign (+/–) of a z-score? What information is provided by the…

A: Let, the dataset scores have a mean µ and standard deviation σ. Then the z score of a given score ,…

Q: The average time to recover from the flu for healthy adults age 18-24 follows a Normal distribution…

A: According to the given information, we have Given that the distribution is normal. Mean = 4.42…

Q: Az-score of z = +1.00 indicates a position in a distribution Above the mean by 1 point. Above the…

A:

Q: =9, median =13, standard deviation -5 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, Mean (x¯) = 9 Median = 13 Standard deviation(s) = 5

Q: How do you find z-score with only a standard deviation and the simple mean? They aren't providing…

A: Let us assume we have a population which is normally distributed with mean µ and standard deviation…

Q: Define how to use t-Statistic in Regression When the Sample Size Is Small? Explain Use of the…

A: The t statistics is divided by its standard error coefficient. The default error is an approximation…

Q: how do you find the standardized test statistic z from n=100,  mean of 502, mu of 499, standard…

A: The provided information is:

Q: Assume that math test scores are normally distributed with a mean of 500 and a standard deviation of…

A:

Q: The owner of a pizza restaurant in France knows that the time customers spend in the restaurant on…

A: It is given that µ is 90 and n is 15.Procedure to find sample mean and sample size using Excel:In…

Q: Pat's z-score on an exam is -1.23. In a normally distributed population with u of 25 how many…

A: Provided information is ; Pat's  z-score = -1.23 population mean(μ) = 25  we know that ; z-score…

Q: You are performing a left-tailed test with test statistic z=-0.55, find the p-value.

A: Given that a left-tailed test with test statistic z=-0.55.

Q: What is the expected average height of 8 year old boys, using the regression equation?

A: From the given information, the obtained regression equation is y=27.84+2.573x.

Q: When you use the two-standard-deviations F-test, what assumption must be met by the variable under…

A:

Q: You are performing a two-tailed test with test statistic z = 2.75, find the p-value to 4 decimal…

A: Given: Z-value Z=2.75 As we have to perform Two tailed test for p-value.

Q: You are performing a left-tailed test with test statistic - 2.02, find the p-value to 4 decimal…

A: We have given that z = -2.02 We have to find the p-value for left tailed test

Q: Scores on a history test have a get age of 55 with standard deviation of 10. What is the z-score for…

A: GivenMean(μ)=55standard deviation(σ)=10student earned score on test(x)=95

Q: Around 750 students took an IQ test. The IQ scores follow a normal distribution and has a mean of 85…

A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…

Q: How do you know when to use a z -test vs. t -test?

A: Z-tests are statistical calculations that can be used to compare the means of a sample's population.…

Q: You are performing a left-tailed test with test statistic z = - 0.65, find the p-value to 4 decimal…

A: We have to find p value.

Q: Question 8 > Calculate the test-statistic, t with the following information. = 0.73 0.91 ni 60, ã1 =…

A: Solution

Q: A review of all records in a large vetinary clinic show that indoor domestic cats at the clinic have…

A: Mean () =15standard deviation () =4sample size (n)= 37

Q: what does it mean if P-Value is extremely low?

A: The p-value or the calculated probability can be defined as the probability of finding the observed…

Q: You are conducting a study to see if the proportion of men over 50 who regularly have their prostate…

A: given data claim : p<0.42left tailed test test statistic Z = -2.91we have to find p value.

Q: test statistic of -0.318

A: Test statistic are used to determine where the null hypothesis rejected or not. If the test…

Q: You are performing a two-tailed test with test statistic z=-0.59, find the p-value to 4 decimal…

A: Given data  two tailed test Z = -0.59 p value = ?

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: You are performing a left-tailed test with test statistic 2= 0.06, find the p-value to 4 decimal…

A: given data  left tailed test z = -0.06  p value = ?

Q: when do we use the statistical treatments

A: I will discuss when we have to use statistical treatments

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: Assume that p is the true proportion of illegal drug use in her school.

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: What proportion of scores lie between 128 and 133 on a test with a mean of 125 and standard…

A:

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: Mean 2, x is 5 and z score is 4 find standard deviation

A: Given ,mean(μ)=2Z-score=4and X=5