a. What is the probability that the sample mean will be within +/- 5 of the population mean (to 4 decimals)? .6826 b. What is the probability that the sample mean will be within +/- 10 of the population mean (to 4 decimals)? .9544

Q: (d) In a random sample of n=150, what is the probability that its sample mean is less than 74.2?…

A: Based on the Central Limit Theorem, it is known that μx¯=86.4 and σx¯=6.80.

Q: d. If 100 SAT scores are randomly selected, find the probability that they have a mean between 1400…

A: d. Z-score: The z score formula is, z=x¯-μx¯σx¯ In the formula, μx¯ is the population mean, σx¯ is…

Q: (d) What is the approximate probability that the grade point average for 25 randomly chosen Math 118…

A: The study is about the grades in a math course.

Q: (d) Based on your answer in part (c), what is the probability that the two categories are different?…

A: The probability that two categories will be different will be: P(different categories) = 1- P(same…

Q: (d) What is the probability that a random sample of 50 students spends an average of $1450 to $1600…

A: 73. D Let x¯ is defined as the average on-campus housing cost for a semester at university which…

Q: (d) Based on your answer in part (c), what is the probability that the two categories are different?…

A: * SOLUTION :-    Given that ,

Q: d. What is the probability that a randomly selected giraffe will be shorter than 16.8 feet tall? e.…

A:

Q: b. Find the probability that a randomly selected acre in the forest has fewer than 28,814 ants. c.…

A: We have to find given probability...and quartile values..

Q: efer to the sample data for pre-employment drug screening shown below. If one of the subjects is ran…

A: Contigency Table   Positive Result Negative Result Total Subject Uses Drugs 46 10 56 Non-Drug…

Q: A survey asked 3494 randomly selected high school seniors about their computer use. Among the 1,734…

A: We have given that,  Favorable cases (males use computers for three or more hours a day) = (X) = 677…

Q: d. The probability that the child will be between 4.99 and 5.39 years old is e. If such a child is…

A: It is given that the age of children in kindergarten on the first day of school is uniformly…

Q: Find the standard deviation for the set of numbers. 9, 16, 7, 14, 6, 6, 7, 13, 17 O 4.2 4.8 O 4.4 O…

A: From the provided information, Sample size (n) = 9 The sample mean can be obtained as:

Q: d. What is the probability that total waiting time is at most 8 min? e. What is the probability that…

A:

Q: 4. James asks Zae what he thinks the probability is of Greg handing out a beatdown to both of them.…

A: Solution: First we understand the concept of objective and subjective probability. Objective…

Q: WHAT IS THE PROBABILITY OF Randomly selecting someone who is between 20 and 34 years old

A: Given that  National age distribution of pie chart.   The people between 20-24 years = 5.2% The…

Q: 46. If a researcher were to increase a sample size from n = 30 participants to n = 80 participants,…

A: Since, the exact question is not mentioned, we'll answer the first one. Please resubmit the question…

Q: b. What is the probability that the sample proportion will be between 0.20 and 0.40 (to 4 decimals)?…

A: Given: Population proportion, p=0.30 Sample size, n=100

Q: d) What is the probability that a randomly selected value from this population is between 112 and…

A: We have,  A random variable is normally distributed with mean (mu) = 120, and standard deviation…

Q: b. What is the probability that the sample proportion will be between 0.20 and 0.40 (to 4 decimals)?…

A: here from given information  p = proportion of firm order come from first time customer  = 0.30 n=…

Q: (d) Would it be unusual for a random sample of 400 adults to result in 120 or fewer who do not own a…

A:

Q: Use the Venn diagram to answer the problems below. Mr. Dela Cruz conducted a survey on the commonly…

A: 1. Total number of sample space      = 164 + 10 + 5 + 8 + 29 + 4 + 12 + 37      = 269 [ans] 2.…

Q: A, you find d deviation - hours wor probability many peop. orobability ne)? How m

A: The probability that a person will work more than 60 hours is given by P(X>60) =P(X-uσ>60-uσ)…

Q: Suppose that five microchips in a production run of thirty are defective. A sample of seven is to be…

A: The total number of microchips are 30 and 5 of them are defective. (a) The number of microchips that…

Q: a. Imagine that you choose one random student from the classroom (perhaps by using a random number…

A: Here as per policy I have calculated 3 parts only

Q: Use the following table to find the probability that a randomly chosen member of the Student…

A: In this problem we are given a 5×2 contingency table on type of students on the Student Government…

Q: (c)Find the probability that more than 6.4% of the individuals in the sample of 115 hold multiple…

A: 6) It is given that p=0.17.

Q: Suppose A and B are events in a sample space S, and P(A|B) 3 and P(B) 4 What is P(An B)? !! %3D…

A: Here given that P(A|B)=3/7 and P(B)=4/5. We need to find Probability of Intersection of A and B.

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: Find the probability that in a random sample of 349 Floridians, between 18.6% and 27.4% have earned…

A: Given n=349p=0.251

Q: 28. What is the sample mean of these 16 data points? 29. What is the probability that a randomly…

A:

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is (a)…

A:

Q: A survey revealed that 36% of people are entertained by reading books, 30% are entertained by…

A:

Q: Suppose that four microchips in a production run of sixty are defective. A sample of six is to be…

A: a) total number of microchips= 60  We have to pick 6 microchips.  that can be done in 60C6 ways…

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is: a)…

A: Given that probability of observing a truck=40% =0.40 Probability of not being a truck= 1- p=q=…

Q: Assuming that a test subject is randomly selected from the sample data below, calculate the…

A: Given information:   Positive test result Negative test result Total Subject uses drugs 42 9 51…

Q: 23. What is the probability that a random sample of 15 students would have a mean less than 1447? a…

A: The mean is 150 and the standard deviation is 8.

Q: e prevalence of a certain condition in the population is 0.1. What is the probability that at least…

A:

Q: What is the sample correl 0.00144 A) B) C) 0.00104 0.57168 0.03789

A: given covariance = 0.0013035 variance of netherlands = 0.0014360 variance of spain = 0.0036288 to…

Q: a. What is the probability that is within $500 of the population mean if a sample of size 60 is used…

A: here given , for population mean = 71300 standard deviation  = 5000   here sample size used in both…

Q: cording to an almanac, 60% of adult smokers started smoking before turning 18 years old. If 100…

A: Given : n = 100 p = 0.60

Q: 6.106 What is the probability that the sample mean will be within 1 unit of the population mean?

A: From the given information, the mean is 50 and standard deviation is 10. The sample size is 13. The…

Q: n a large population, 46% of the households own DVD recorders. A simple random sample of 100…

A: It is given that n=100 and p=0.46.

Q: Consider a sample set as S = {2,4,6,8,10,12,14,16,18,20}. Event A is the multiples of 4, while event…

A:

Q: (d) Would it be unusual for a random sample of 900 adults to result in 144 or fewer who do not own a…

A:

Q: Let the sample space be S = {p, e}. How many events are there?

A: Solution: From the given information, the sample space is Here, the number of outcomes in the…

Q: d. There are exactly 6 people in the sample who are NOT afraid of being alone at night.

A: Given : 50% of the Americans are afraid of being alone in a house at night ,  which means Americans…

Q: Suppose that 30 percent of an adult population have an infectious disease and 40 percent have a…

A:

Q: d. Assuming a sample size of 76, what is the probability that the sampling error is within $1000.…

A: Given: Sample size, n = 76    Let μ be the true mean and σ be the population standard deviation.…

Q: nt. A random sam ple mean of 4.1 and

A: Given Data : For Sample 1 x̄1 = 4.1 s1 = 0.6 n1 = 5 For Sample 2…

Q: The bottom panel of figure 1 (p. 311) shows the probability histogram for the total number of spots…

A: Here probability histogram given Area under the histogram =? 1 -  chance that the total no. Of spots…