Given: X= 45.5, s=4.81, N = 50 1. Find the z-score value associated with a guess of 38. 2. What percentage of students guessed that I was between 41 and 44? 3. What percentage of students guessed that I was between 47 and 52?

Q: (a) What percentage of people has an IQ score between 70 and 130? (b) What percentage of people has…

A:

Q: A population with a mean of µ= 8 has EX=40. How many scores are in the population

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Q: the mean = 146, and s =  35 Question #3 A percentage of female students with scores between 41 and…

A: From the provided information, Mean (x̅) = 146 Standard deviation (s) = 35

Q: e) From the analysis of students' marks, Mr Adam decided to do one-to-one consultation with his…

A: According to the information given in the problem we proceed as follows,

Q: Select the correct statement below   a) If the nineteenth percentile has a value of 0.8, this…

A: We know if X is pth  percentile value that means their are p percent values are less than X.

Q: The distribution of scores on the SAT test is approximately normal with μ = 500 and σ = 100. a. What…

A:

Q: A sample with a mean of M=8 has an EZ= 56  how many scores are in the sample?   the number of…

A: Given that, Mean = M = 8 EZ= 56  n = ?   Definition of mean :  Mean is defined as sum of all…

Q: In a population with σ = 5, a score of X = 46 corresponds to a z-score of z = +0.40. What is the…

A: Solution-: Given: X=46, σ=5, z-score=0.40 We find population mean (μ)=?

Q: d) What percentage of women are TALLER than 5 feet 11 inches? Round to nearest tenth of a percent. %…

A: Given Information: Mean height of adult men = 69.8 inches The standard deviation of height of adult…

Q: In a sample of n= 6 scores, five of the scores are each above the mean by one point. Where is the…

A: The mean of a data can be obtained as follows:

Q: Assuming all conditions for the appropriate test are met, the agriculturalist reported a p-value of…

A: Given, p value = 0.072 α = level of significance =0.05

Q: In an Oreo factory, the mean mass of a cookie is given as 40g. For quality control, the σ is 2 g.…

A: Given

Q: A sample of 8 movie tickets had the following prices: 1 ticket at $7.50, 3 tickets at $8.50, and 4…

A: The price of 1 ticket is $7.50 The price of 3 tickets is $8.50  The price of 4 tickets is $9.40…

Q: Given the supplied information, interpret the results. Be sure to (1) tell what was done, (2)…

A: Give that, A statistics professor has compared the systolic blood pressure of her class (N = 24) (M…

Q: d. What percentage of students scored at least 66? e. How many students scored more than 98 on the…

A:

Q: (a) What percentage of people has an IQ score between 90 and 110? (b) What percentage of people has…

A: Given that  Mean = 100 and  SD = 10

Q: The mean score of a girl in 3 tests is 68. What should her mean score in 2 remaining tests be in…

A:

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: The value of the third quartile for a data set is 65. This means that: O 25% of the values in that…

A: Given that, The value of the third quartile for a data set is 65.

Q: 1. Which of the following is closest to the percent of those surveyed who had a summer job? A) 22%…

A: Given Data :

Q: (b) What percentage of the eight population values stated above, fall within the interval (μ- σ, μ +…

A:

Q: A student receives the following grades, with an A worth 4 points, a B worth 3 points, a C worth 2…

A: A student receives the following grades: A worth 4 pointsB worth 3 pointsC worth 2 pointsD worth 1…

Q: From the previous question, what would what the average preferred ice crease flavor be? (hint: note…

A: There are three different types of averages - mean, median, and mode. Favorite Icecream Flavour…

Q: Es. What is the lowest I.Q. score acceptable for the advanced training ?

A: Let X denote the IQ of army volunteers. Given that X follows N(mean = 110, SD = 10), then Z = (X -…

Q: n 8. The mean height of 25 male workers in a factory is 61 inches and the mean helght of 35 female…

A:

Q: On a certain exam, Tony corrected 10 papers and found the mean for his group to be 75. Alice…

A: Given: Tony corrected 10 papers and mean for his group is 75 and Alice corrected the remaining 20…

Q: Generally speaking, would you say that most people can be trusted? A random sample of n1 = 250…

A: Given: n1 = 250 r1 = 45 n2 = 280 r2 = 71 ∝ = 0.05 Thus, we have, p^1=r1n1=45250 =…

Q: c. What percentage of mean heights, based on a sample size of 14 students, would we expect to be…

A: given  μ=63.8σ=2.66n=14x=62.4mean =μ=63.8standard error σx=σn=2.6614=0.7109 statistic is…

Q: given: mean= 68.73 s.d. 9.03 find what percentage of the scores fall above 50?

A: Given μ=68.73 and σ=9.03 consider,…

Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…

A: The difference in body temperatures is defined as d = first - second

Q: 23. Calculate the SS for your D scores:

A: We have given that the researcher would like to evaluate the effectiveness of a pain-relief patch…

Q: Given that the mean number of centuries scored per player is 1.95, find the value of k.

A:

Q: d. between the scores of 35 and 65? e. above a score of 72? of 31 and above a

A: Since multiple parts are given, first two parts are solved with all steps and diagram . Please…

Q: 1. If a speedometer's absolute error is 1 mph and it measures a speed of 55 mph, what is the…

A:

Q: Given the supplied information, interpret the results. Be sure to (1) tell what was done, (2)…

A: Test Statistic A test statistic is a value derived from a statistical hypothesis test such as…

Q: d. To estimate p with E = .03, 95% confidence, andp thought to be approximately .70

A:

Q: The mean GPA for 102 residents of the local apartment complex is 1.8 What is the best point estimate…

A: Solution: Given information:  n = 102 Sample size  x = 1.8 Sample mean

Q: answer this with solution:   The mean monthly salary of 26 male employees is 35,500 while that of…

A:

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 .…

A:

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 .…

A: From the provided information, The scores on the Wechsler Adult Intelligence Scale are approximately…

Q: 2. On a reading test, Amelia's score of 455 was higher than the scores of 4256 of the 7210 students…

A: Obtain the percentile for the Amelia’s score. The percentile for the Amelia’s score is obtained…

Q: 8. Two hundred elementary school students took a 50-question math test. Their answers produced the…

A: The provided information is, n=200∑X=6000∑X2=185000 That is, the mean and standard deviation can be…

Q: A sample with a mean of M=8 has EX=56. How many scores are in the sample

A: The formula for mean is as follows: M =∑iXinn =∑iXiM

Q: Use this information to answer the following questions: Age at onset of dementia was determined in…

A: Given,m=70s=5.0

Q: One researcher wants to estimate the proportion of MU students who are vegetarian, 6 answered "yes".…

A:

Q: 13. The weights of 7 boys and 13 girls were measured. It was found that the mean wight of the boys…

A: Given that boys -- n= 7 , mean =58.1 girls --n=13 , mean =62.7 mean weight of whole group =?

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100μ=100 and…

A: Given dataMean = 100Standard deviation = 15Probability of scoring less than 130 is given by

Q: What percent of our campus is female? If no preliminary study is made to estimate, how large a…

A: Given that no preliminary sample is taken to estimate the proportion of females. let the sample size…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.