Teachers in a certain private school have a mean age of 38 years with a standard deviation of 6 years and a mean monthly salary of Php 24,000 with a standard deviati of Php 1,500.

Q: If about 75% of the students of a certain university are expected to use a laptop for online…

A: Given,sample proportion (p^)=0.75margin of error(E)=0.05α=1-0.99=0.01α2=0.005Z0.005=2.5758…

Q: The following data are the last three years of quarterly sales ($ thousands) for AmeriWeld. They are…

A: Given that -

Q: A survey among Harvard students was conducted. It is about their starting position when they sleep…

A: Do the collected data represent a sample or population? Explain your answer.

Q: Happy Pet, Inc., is a large pet store located in Long Beach Mall. Although the store specializes in…

A:

Q: each case, determine the two variables and tell Wheth the relationship is positive or negative. a.…

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

Q: High blood pressure has been identified as a risk factor for heart attacks and strokes. The…

A: Given that, The Sample size is 41 i.e., n=41 The proportion of U.S. adults with high blood pressure…

Q: 37.5 5.9894 37.9 7.5422 44.5 8.7951 37.9 6.0831 38.9 8.3607 36.9 8.1400 45.8 9.1416 (a) Calculate…

A:

Q: Find the correlation coefficient and report it accurate to three decimal places. r =  What…

A: Given: x y 59 36.5 68 47.4 46 -2.9 68.4 42.2 63.9 23 63.4 17.3 50.1 32.1 67.5…

Q: Let X be a Bernoulli Trial population with parameter 0 representing the probability of a success.…

A:

Q: he yearly data have been published showing the number of releases for each of the commercial movie…

A: Given,

Q: Eagles always lay three eggs at a time. The number of eggs that hatch is described by the following…

A: Create a histogram Find mean =?

Q: you have run 9 tests and are using the Bonferroni correction to correct for multiple comparisons,…

A: Here we want to know the new alpha.

Q: Congratulations. You have just inherited your uncle's business, which is a clothing store. A…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: 9. An electronic device has a life length of X, which is a continuous random variable with PDF…

A:

Q: In a survey, 20 people were asked how much they spent on their child's last birthday gift. The…

A: Solution-: Given: x¯=35,n=20,s=16,α=0.10 We want find a 90% C.I.

Q: You observe the following data that represents the average outcomes of two groups of individuals the…

A: From the given information: Group Before After Treated 40 75 Not Treated 20 30 The pre-/…

Q: there sufficient evidence at a=0.01 to conclude that their health care expenditure differs from the…

A:

Q: Example 22.12 The following table gives the number of defects observed in 7 carpets passed as satis-…

A:

Q: Given the sample data 85 85 85 85 85 85 85. Find the variance and the standard deviation of the…

A: Let X denote the sample data. The standard deviation of the data can be calculated as SD =…

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that 47% of parents of children in high school felt it was a serious problem that high school…

Q: Let P(X 21) = 0.52 What is P(X S 25)?

A:

Q: A medical doctor claims that 40% of the patients utilize health insurance, but a social worker…

A:

Q: in a certain lottery, there are 58 balls numbered 1 to 58. To play the game, choose six numbers from…

A: here given in certain lottery there are 58 numbered 1 to 58  choose six numbers from 1 to 58  you…

Q: A nonprofit company concerned with the school dropout rates has designed a tutoring program aimed at…

A:

Q: Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate:…

A: We know that ,if population standard deviation (σ) is  known then we use z-distribution to construct…

Q: Comparing Two Samples Again. Compare the scores on Test 1 to the scores on Test 2 for College…

A: The objective is to perform a two-sample t-test by comparing the scores on Test 1 to the scores on…

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A:

Q: ow many total ways can we form a 3-number password or a 5-number password using the numbers for the…

A: Given that  Numbers set = { 1, 2 , 3 , 4 , 5 } Odd numbers in set = { 1 , 3 , 5 }   a)  3 - Number…

Q: The scores of the students are normally distributed with a mean of 85 and a standard deviation of 4.…

A:

Q: ted to determine if there was an association between daily cantaloupe consumption and the occurrence…

A: Based in the given data Step a (option B ) This is a cross-ectional because the reserchers lokked at…

Q: What is the multiple testing problem? Why is the Bonferroni adjustment conservative for GWAS data…

A:

Q: A researcher measures two individuals and uses the resulting scores to make a statement comparing…

A: We have given the following statements about the identify the scale of measurement.

Q: Problem 2.1: The probability distribution for the discrete random variable X is described in the…

A:

Q: a survey, 27 people were asked how much they spent on their child's last birthday gift. The results…

A:

Q: Question 6 Points 1 Compute the probability of getting face 1 when we roll a die.

A:

Q: The average daily cost of living in dollars (x) and the average wage in dollars (y) in 12 regions of…

A: Note: As per the guidelines, we are supposed to solve only first three subparts. Please repost the…

Q: 1. An experimental study was conducted by a researcher to determine if a new time slot has an effect…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 633 grams and a standard…

A:

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that  Sample size n =900 Population proportion p=47%=0.47

Q: Data on the fuel economy of several 2010 model vehicles are given in the accompanying table.…

A: Introduction: Denote μ as the true mean gas mileage of all 2010 vehicles.

Q: Following is the gross pay for Ed for his first 8 years at his current job.   Year…

A: The independent variable is Year. The dependent variable is Salary. We have to do regression…

Q: Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.…

A: Test is that whether the mean proce has increased.

Q: The school nurse would like to conduct a study on the sleeping habit of grade six students in their…

A: the school nurse would like to conduct a study on the sleeping habit of grade six students in their…

Q: Which of the following are anecdotal and which are based on sample? a. Out of 200 students…

A: Please find the explanation below.

Q: Part 4 of 6 (c) Find the probability that the proportion of individuals in the sample of 65 who have…

A: Given p=0.23, n=65

Q: f one student is chosen at random, Find the probability that the student did NOT get an "A"

A: Given that data :   A B C Total Male  19 14 9 42 Female  17 15 2 34 Total  36 29 11 76…

Q: In an interview held among 18 randomly selected elementary teachers of a certain school, the mean…

A:

Q: Mika studies if age correlates with the average number of hours of sleep, so she selected a random…

A: Consider that ρ is the population correlation coefficient between Age and Sleep.

Q: If you conduct 14 different statistical tests with alpha = 0.05, what is the probability you will…

A: Given that the researcher conducts 14 different statistical tests, each with an alpha is 0.05. That…

Q: Ages Number of students 15-18 5 19-22 9 23-26 8 27-30 6 31-34 4 35-38 4 Based on the frequency…

A: