Average college cost of tuition fee for all private institutions last year was P36, 400. A random sample of costs this year for 45 institutions of higher learning indicated that the sample mean was P37,900 and a

Q: One sample has n = 6 and M = 10. A second sample has n = 4 scores with M = 15. If the two samples…

A: Combined mean = n1x1¯+n2x2¯n1+n2

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: The average height of women in the freshman clas at UA has historically been 5'4" with a standard…

A: Consider a random variable X, that defines the height of women in the freshman class at the UA.

Q: The average house has 10 paintings on its walls. Is the mean larger for houses owned by teachers?…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.05

Q: About 7 percent of the pop has a particular gene tic mutation 200 ppl are randomly selected…

A:

Q: A rowing team consists of five rowers who weigh 152, 159, 162, 150 and 156 pounds. Find all possible…

A: The formula for combination is nCr = n! / [r! (n – r)!] = [n (n – 1) … (n – r + 1)]/r!. Explanation:…

Q: what is the 95th percentile in the t-distribution if the sample size is 25?

A: Given Information: n=25Type of distribution=t distributionTo calculate=95th percentile

Q: The z for a sample mean hypothesis test compares a sample mean to another mean. In these situations,…

A: From the above data We are given that the The z for a sample mean hypothesis test compares a…

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A: Introduction:Denote p as the true proportion of adults who would erase all of their personal…

Q: a. Out of a random sample of 74 birds, how.many would you expect to live longer than 9 years? b.…

A: Let X = number of years a bird lives.  Then, X ~ Exponential (0.125) Thus,  f(x) = 0.125e-0.125x .

Q: The Federal Pell Grant Program gives grants to low-income undergraduate students. According to the…

A: Solution According to guidelines we solve first question

Q: .In sampling a large number of electronic chips manufactured by a machine, the mean number of…

A: First we have to find the probability of atleast 3

Q: The number of incidents in which police were needed for a sample of 10 schools in ABC University is…

A: Given  The data are 7,37,3,8,48,11,6,10,15,25

Q: When you are conducting the t test, the sample size must be greater than .30

A: We have to find the statement is true or false....

Q: Suppose you wish to find the average annu salary for school teachers in the United States. You…

A: Given data,Mean μ=53145sd    σ=16451n=31Find 95% CI?

Q: Which do you think would have more variation: the GPA's of students in an honors college with a…

A: There are two cases: 1. the GPA's of students in an honors college with a prestigious university, 2.…

Q: The president of an all-female school wants to know if the students at her school studied more or…

A: Given: The information is provided of School of all female and all male. The provided data is:…

Q: The amount spent on textbooks for the fall term was recorded for a sample of five university…

A: According to the provided information, the data are $400, $350, $600, $525, and $450

Q: Due to recent trends in the childcare industry, the firm suspects that the that the mean annual…

A: Solution: Given information: n1=20 Sample size of Illinoisn2= 20 Sample size of…

Q: Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify…

A: Given: Sample size, n = 300   Under age 20 Age 20-29 Age 30 or older Observed…

Q: The test statistic for a One-Sample T-Test for Mean is?

A: It is given that the We have a problem with the Mean of one sample.  It is obvious that for one…

Q: ank of America's Consumer Spending Survey collected data on annual credit card charges in seven…

A: Here, Paired T test is applicable

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: Assume you did an experiment with 3 groups and 16 subjects per group. The sample variances in the…

A:

Q: Are freshmen psychology majors more likely to change their major before they graduate compared to…

A: Given Information :   344 of the 618 freshmen psychology majors from a recent study changed their…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: The single proportion  binomial test is used to compare a proportion of responses or values in a…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: The table on the right table s of adults (from many sample

A: According to the sum, A table is given of the probability distribution of the number of adults who…

Q: A researcher assesses eye color for a sample of n = 50 people. Which measure of central tendency…

A: Here, the researcher assesses eye color for a sample of 50 people.

Q: For Americans using library services, the American Library Association claims that at most 70% of…

A: Here, One sample Z test is applicable. x = 85 , n = 100

Q: Class Limits Frequency 86 - 90 6 91 - 95 22 96 - 100 45 101 - 105 22 106 - 110 5 a. Find the mean,…

A:

Q: The state Government gives grants to low-income undergraduate students. According to the National…

A: The given hypotheses are as follows: H0: µ = 2,600. Ha: µ ≠ 2,600. The sample size is 50 students,…

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: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The value of p0 is 0.52 and the sample size n is 800.

Q: 300 books were selected at random from a library. If the mean length of books in this sample was 150…

A: Given that total books, n= 300 Mean, X bar= 150 and  Variance, sigma= √100 = 10 We know that z…

Q: Suppose that in a large class, the instructor announces that the average grade on an exam is 75.…

A: In a large class, the instructor announces that the average grade on an exam is 75. The two…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The hypothesis tests, contain two hypothesis: null hypothesis and alternate hypothesis. The…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: Seventy-four percent of Americans favor spending government money to develop alternative sources of…

A: According to the provided information, Sample size (n) = 120 Probability (p) = 0.74

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: Sixty-three percent of U.S. households have a personal computer. In a random sample of 400…

A:

Q: A rowing team consists of five rowers who weigh 152, 159, 162, 150 and 156 pounds. Find all possible…

A: Given: Weights of five rowers- 152,159,162,150,156 Sample size, n=3

Q: Find the Mean and variance for the prompts below: State Farm Insurance Company reports that…

A:

Q: A fire insurance company thought that the mean distance from a home to the nearest fire department…

A: Given that  Mean distance = 4.5 miles  Number of samples = 52  resulting sample mean = 3.7

Q: An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of…

A: Given that, There are 3 treatments conditions with a sample of n = 12 participants in each…

Q: In a statistics class, 10 scores were randomly selected, and the following results were obtained:…

A: From the provided information, The data values are 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 Sample…

Q: Primary seat belt laws allow police to stop a motorist for not wearing a seat belt. According to the…

A: The random variable is drivers in Limpopo province who used seat belts. There are two independent…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: using the given data fill all the blanks required