If the formula X= -x, is used to find the mean of the following sample, what is the value of n? 2, 63, 88, 10, 72, 99, 38 О А. 7 В. 6 С. 5 D. 8

Q: The student government at Nassau Community College has been told that the student population…

A: As due to the honor-code, we are authorized to answer only 3 subparts for each question and that you…

Q: Suppose the degree of student in exams was (70,57,60,75,80,58,90), calculated mean for grouped data…

A: See the attachment

Q: a. If a constant c is added to each xi in a sample, yielding yi = xi+ c,how do the sample mean and…

A: The sample mean of a dataset is computed by dividing the sum of the observations ∑x by the total…

Q: Suppose that out of 1200 students at your university, 100 are on a break and not taking any classes…

A: μp^= p

Q: The mean of a sample is 40. What will the mean become if a) 9 points are added to each score? b) 18…

A:

Q: A biology professor claims that, on the average, 20% of her students get a grade of A, 30% get a B,…

A: The hypothesis is, Null hypothesis: H0:pA=0.20,pB=0.30,pC=0.25,pD=0.15,pF=0.10 Alternative…

Q: Find the weighted mean of the number of sheets on a roll of toilet paper: 7 brands have 22 sheets on…

A:

Q: What is the standard error of the sampling dis- tribution of the mean for the following? a. o, = 48,…

A:

Q: A set of n = 6 scores has a mean of M = 10. Another set of scores has n = 4 and M = 20. If these two…

A: Given, First set has mean = 10 and n =6 Second set has mean = 20 and n =4

Q: ​If, in a random sample of 200 items, 65 are​ defective, what is the sample proportion of defective​…

A: x =Number of defective items n = Sample size

Q: 11) According to-the given data, how many of the passible sandwich combinations include either roast…

A: There are 5 kinds of beef and 4 types of cheese. If roast beef or salami is selected then there are…

Q: (a) How large should the sample be if the margin of error is to be less than $4? ANSWER: (b) If we…

A: here given , Population standard deviation  =  34$  Confidence level = 90%  MOE < 4 $

Q: Suppose that 50 measurements were taken and the mean was calculated to be 4.55.  Assume next that…

A: Solution: From the given information, mean of 50 measurements is 4.55.

Q: A sample consists of the following n = 6 scores: -2, 3, -3, 1, -3, 4 What is the Z-score for the raw…

A: Given data set is -2,3,-3,1,-3,4sample size(n)=6

Q: According to a college​ survey, 22% of all students work full time. Find the mean for the number of…

A: Given information: Percentage of students that work full time = 22% The probability of success, that…

Q: Consider the sample consisting of the following nine results : 2.3, 7.2, 3.7, 4.6, 5.0, 7.0, 3.7,…

A: Given : Sample size (n) = 9 Data 2.3 7.2 3.7 4.6 5 7 3.7 4.9 4.2

Q: A school principal surveys 4 freshman, 4 sophomores, 4 juniors, and 4 seniors. For the situation…

A: We have to find correct answer for given data....

Q: a. Explain what it would mean to make a type I error. Choose the correct answer below. A. A type I…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: If the formula X=-x, is used to find the mean of the following sample, what is the value of n? 51,…

A: We have given that  The data are 51,37,83,44,52,19,99,7,36

Q: One sample has n = 5 scores and M = 10. A second sample has n = 20 scores and M = 5. If the two…

A:

Q: 4) Suppose a sample consists of the following numbers: 12, 15, 13, 12, 14, 12, 16 Find a) Mean, b)…

A: As per our guidelines we can solve three sub part of question (4) and rest can be reposted.…

Q: How many possible sample spaces when a married couple wants to have 4 children; with 2 boys and 2…

A: Hello! As you have posted 23different questions, we are answering the first question(7). In case you…

Q: A worker at a frozen yogurt store has 2 3/4 cups of frozen yogurt to give to customers as samples.…

A: We have to find no. Of samples , using all the frozen yogurt.

Q: About 7% of males are colorblind. Hoping to find many colorblind men for her study, a researcher…

A: It is given that p =0.07 and n = 433.

Q: onsider a total of 1,000 people. If it was said that within 1 deviation (of the mean) of all people…

A: Given data, n=1000 it was said that within 1 deviation (of the mean) of all people like MATH 123

Q: A medical researcher wants to do a study on the proportion of knee replacement surgeries that result…

A:

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: One sample has a mean of M = 6 and a second sample has a mean of M = 12. The two samples are…

A: Given information- We have given means of two samples. M1 = 6 M2 = 12 We have to find the mean for…

Q: A group of 5 students was asked, "How many hours did you watch television last week?" Here are…

A: Arranging the terms in ascending order

Q: (a) List the 10 possible samples of 3 from the 5 students, A, B, C, D and E. (b) Find the sample…

A: According to the answering guidelines, we can answer only 1 question and the rest can be reposted.

Q: a sampling plan, when n

A: n = 50, c = 2, N = 500 and p = 0.01 Pr{d<=2}

Q: a) Suppose you plan to invest equal amounts of money in each of 3 business ventures. If you have 7…

A: a. Combination: The number of different selections of ‘r’ elements (order doesn’t matter) from a set…

Q: A sample of n = 64 scores is selected from a population with µ = 80 and with σ = 24. On average, how…

A: Given A sample of n = 64 scores is selected from a population with µ = 80 and with σ = 24. On…

Q: if the 90% C for the population mean is (-2.58, 7.54) what is the sample mean O a 248 Ob. 10.12…

A:

Q: Find the weighted mean of four test results, 65, 89, 105 and 101, where the first test counts 22%,…

A: Given:   x weight 65 22% 89 32% 105 17% 101 29%

Q: (a) If the standard error of the mean is 10 for N = 12, what is the standard error of the mean for N…

A: The standard error of the sampling distribution of the sample means is given as follows:

Q: How many scores 2. between 96 and 106?

A: HERE GIVEN , mean µ = 86 and σ= 10. HERE USE NORMAL DISTRIBUTION BECAUSE POPULATION IS LARGE ENOUGH…

Q: 9. Find the mean of a student's test scores if he earned 93, 91, 85, 90, and 91 points on five…

A: Given data is 93, 91, 85, 90, 91sample size(n)=5

Q: In a set of 22 scores in statistics, the highest and the lowest scores were found to 89 and 25…

A: Measure of central tendency measures the central or average value of a dataset. Mean, median and…

Q: If the formula X = -Ex, is used to find the mean of the following sample, what is the value of n?…

A: Step 1: The given data set  43,36,93,2,28,83,10,22,9,84,41,3,13,20,66,7 Here to calculate sample…

Q: B. The average exam score for 10 students in a statistics class was 85. One student dropped the…

A: Given When n=10, average exam score for 10 students in a statistics x̄=85  When one student dropped…

Q: 4) Students in two fifth grades were given the same English test. One class of 27 students had a…

A: We have, One class of 27 student had a mean of 69 and the second class of 23 student had a mean 74.…

Q: 7. Find the mean of a student's test scores if he earned 95, 93, 85, 90, and 91 points on five…

A:

Q: Based on Empirical rule, how many percentages of the data will be between the range of 14 to 26,…

A: Given : mean ,u = 20  standard deviation, s = 3

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: Suppose that 50 measurements were taken and the mean was calculated to be 4.55. Assume next that one…

A:

Q: Find the estimated standard error for the sample mean for n = 13 and SS = 3639. Nearest hundredths…

A: It is given that n = 13 and SS = 3639.

Q: One sample has a mean of M=5 and a second sample has a mean of M=10. The two samples are combined…

A: Given that, sample 1 has mean = 5 and sample 2 has mean =10.

Q: As part of a statistics project, a teacher brings a bag of marbles containing 700 white marbles and…

A: Given data: Bag of marbles containing 700 white marbles and 300 red marbles