If a study was counting cells on a petri dish and listed an of n=25, what would the df be for the study?

Q: For a normal deck of playing cards, four cards are drawn and placed face up on a table, left to…

A:

Q: 7. Jonard wanted to test if there is association between vitamin exposure and having cardiovascular…

A: The provided information is The total sample size is N=530The chi-square 2*2 contingency table value…

Q: a) 10 samples of different Publishers are on display at an Open Day.                   Visitors are…

A: Total available sample n= 10 Number of samples to be selected r = 4

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: Target population means, the set of elements that we want to know more about

Q: From a normal deck of 52 playing cards, five cards are drawn and placed face up on a table, left to…

A: From a normal deck of 52 playing cards, five cards are drawn and placed face up on a table, left to…

Q: A samp s chosen. It was found that among engineering majors, 70% are male. nd among English majors,…

A: Q

Q: The manager of the dairy section of a Superstore in Regina feels that at least 10% of the egg…

A: Given claim: At least 10% of the egg cartons have at least one broken egg. Null Hypothesis:…

Q: c. What is the power of the test in part a? d. How many animals should be included in the study to…

A: c) What is the power of the test ? The power of the test is the probability of rejecting the null…

Q: A researcher has an experiment that needs 20 scores to get enough power to be significant. a. If…

A: For a one-sample t-test, only one set of sample score is taken which is used to obtain a sample…

Q: 4. Professor Dumbledore wanted to know whether students in Gryffindor house were performing better…

A: Hey there! Thank you for posting the question. Since you're posted questions posted, we will answer…

Q: To compare the time they spent running on the wheel between the three different days (in other…

A: ANOVA To check the difference in mean excercise time of rats in three different conditions.

Q: For X ? N(32, 72), find two values x1 and x2, symmetrically lying on each side of the mean, with…

A: Note: Thank you for your question. For the calculation we are considering the distribution of X as…

Q: In a random sample of 80 Americans, 44 wished that they were rich. In a random sample of 90…

A: Given p^1=4480=0.55p^2=4190=0.45Level of significance=0.01 Null and alternate hypothesis is given…

Q: In the 2008 GSS, those who said they were raised as religious fundamentalists had a mean educational…

A: There are two independent samples which are fundamentalists and non fundamentalists. We have to test…

Q: f the sample size had been smaller, the power would have been smaller. O True O False

A: It can be shown that power will generally increase as sample size increases. As other planning…

Q: For a z-score of Z = -1.75, give the proportion in the body (hint: use the z-table), and state…

A: Given For a z-score of Z = -1.75

Q: The television show NBC Sunday Night Football broadcast a game between the Colts and Patriots…

A: Let the random variable X denote the number of households having TV sets in use at the time of that…

Q: In a large restaurant, 18 out of 20 customers ask for tea after their meal. If a random sample of…

A: According to the given information, we have 18 out of 20 customers ask for tea after their meal.…

Q: In a random sample of 80 Americans, 55% wished that they were rich. In a random sample of 100…

A: Given, Americans : Sample size = n1 = 80 Sample proportion = p^1 = 0.55 Europeans : Sample size =…

Q: How many ways can a researcher select 5 rats from 10 rats and assign each to a different test?

A: It is given a researcher select 5 rats from 10 rats and assign each to a different test.

Q: The Widington College program is considering buying a Scanner machine among 5 (five) types, namely…

A: The Widington College program is buying a Scanner machine among 5 (five) types, the SC1, SC2, SC3,…

Q: If Mrs. Chavez saved 20% of her total earnings as a Clerk I in the first five years of her career,…

A: We will solve the problem

Q: The total degrees of freedom for an experiment with n1 = 10, n2 = 12, and n3 = 10 is ________.

A: It is given that the total number of observation in the experiment is 32.

Q: When finding the t-value, how many degrees of freedom do we have from a sample size of n=10?

A: Degrees of freedom = n-1

Q: . A researcher has an experiment that needs 20 scores to get enough power to be significant. a. If…

A: Given:  A researcher has an experiment that needs 20 scores to get enough power to be significant.

Q: Two groups performed an experiment separately by tossing a coin in the air. Group P performed 50…

A: We will find the probability of tossing a head for each group.  For group P: the probability of…

Q: Your town does a study and finds that 3 in 5 dogs have licenses. If there are 250 dogs in town, how…

A: In the given study it has been found that 3 in 5 dogs have licenses. The probability that the dogs…

Q: Consider the eundion by using divided differenas, find the Suitable interpolating powpomial L the 24

A: See the attachment. Send your feedback please.

Q: From a team of 27 baseball players a group of 6 is to be randomly selected for steroid testing.  In…

A:

Q: 1. What is the frequency of the AA genotype in this population? 2. What is the frequency of Aa…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Dorothy Little purchased a mailing list of 2,000 names and addresses for her mail order business,…

A: Solution: 1. Let X be the number of non-authentic names and n be the number of names from the list…

Q: A Wall-Mart department store examined a sample of the 20 credit sales, and recorded the amounts…

A: The sample includes n=20 credit sales. There are k=4 types of credit cards. The degrees of freedom…

Q: omly selected person aged 20 years or older is male and jogs? Would it be unusual to randomly sel r…

A: Given P(J)  = 26.6% =0.266 P(M|J) = 12.4% =0.124

Q: A population is normally distributed with µ = 90 and σ = 8. For this population, which is the 29th…

A: Solution-: Given: μ=90,σ=8 We want to find 29th percentile?

Q: Explain your answer on the given problem. 1. XYZ Cable corporation employs 2,500 people. If a…

A:

Q: If you selected a sample of n = 35 from a population whose μ = 56 and σ= 12, what would you expect…

A: Given information: The sample size is, n= 35. The mean of the population is, μ=56. The standard…

Q: Decide if each of the following statements is True or False. If a sample of n = 10 scores is…

A: Solution: let x1,X2 ....X10 random samples of normal distribution (mean=mu, varience=sigma^2)…

Q: The Widington College program is considering buying a Scanner machine among 5 (five) types, namely…

A: a) Excel Procedure: Enter the given data in Excel sheet>Data>Data Analysis>Select ‘Anova:…

Q: A machine puts out 10 defective units in a sample of 200 units. After the machine is overhauled it…

A:

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 300…

A: Part a:          x = 300         n = 450         p' = 300/450 = 0.6667   Part b:  X is the number of…

Q: Suppose a study uses independent groups and has 38 individuals in one group and 34 individuals in a…

A: We have to find degree of freedom..

Q: In a political poll, approximately 3/25 of the people asked preferred candidate A in the upcoming…

A: Given that, 3/25 of people asked preferred candidate A. The total people asked in election is…

Q: Supposed that in the past, 10% of women in the Philippines have severe dysmenorrhea. Do we have…

A: Followings are the answer of the questions The following information is provided: The sample size is…

Q: f a random sample of 165 is taken from the entire population by systematic sampling. From which…

A: Systematic sampling: When the population units occur in a sequence or pattern and a sample of size n…

Q: On a casual day it was found that 12% of the learners wore their favourite t-shirts. The remaining…

A:

Q: the follov

A: we have to name the given angles in two different ways.

Q: It's all about COMBINATION - From a population of 50 households, in how many ways can a researcher…

A: The population is given as 50 and 10 need to be selected. The total number of ways of selecting 10…

Q: In October, the campus bookstore asked a random set of freshmen and seniors how much they had spent…

A: Hypothesis Testing: The value of the sample size is more than 30 and the aim is to compare the means…

Q: Zach ,a Quality Process Engineer for Hershey Chocolates, pulled 16 random kisses from production and…

A: The sample of 16 kisses were pulled out from production.

Q: A survey of the population of 51 students in Psych 311 asks how many credits students are taking and…

A: Here it is given that- ∑1nX=686∑1nX2=9832.92 Total number of observations (n) = 51