7. In a sample of n= 6, five individuals all have scores of X= 10 and the sixth has a score of X=16. What is the mean for this sample?

Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: The sample of teenagers time is 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6.

Q: What Percent of the US Population Are Senior Citizens? People 65 years and older are the fastest…

A: From the histogram, it is observed that the distribution is centered at 0.13. From the histogram of…

Q: 2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74 deliveries,…

A:

Q: What is the proportion of elderly people (65+) who have had Eagle Flu and thus carry EFA (Eagle Flu…

A:

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

A:

Q: Suppose that the unemployment rate for 18- to 34-year-olds was reported to be 10.6%. Assume that…

A: Given, The unemployment rate for 18- to 34-year-olds was reported to be 10.6% based on a random…

Q: Suppose an x distribution has mean μ = 2. Consider two corresponding  x  distributions, the first…

A:

Q: 4. A company is interested in evaluating its current inspection procedure for shipments of 50…

A:

Q: The scores of a random sample of 8 students on a physics test are as follows:   60, 62, 67, 69,…

A: Hypothesis  Ho: mu=65 vs H1: mu ≠ 65

Q: 1. Out of 100 numbers, 20 were 5's, 40 were 4's, 35 were 6's and 5 were 2's. Find the mean

A:

Q: If all the possible random samples withn 36 scores are selected from a normal population with u- 80…

A: sample mean=E(X¯)=E∑i=1nXi/n=∑i=1nμn=nμn=μsample mean=μ=80

Q: 3. For a group of 100 candidates the mean and standard deviation of their marks were found to be 60…

A: Given: There are 100 candidates  mean of their marks = 60 Standard deviation of marks = 15 Wrong…

Q: 5. A population of N=6 scores has EX=48 What is the population mean?

A:

Q: b. Find P(ΣX > 170) and round to two decimal places.

A: 7.8 The mean is, μ=a+b2=1+52=3 The variance is, σ2=b-a212=5-1212=1612=1.3333 The mean for sample of…

Q: A sociologist wants to know the proportion of adults with children under the age of 18 that eat…

A:

Q: 7. A population of N = 15 scores has EX = 120. What is the population mean?

A:

Q: If all possible random samples of size =45 are selected from a population with μ=69 and a σ=6, and…

A:

Q: 19. A random sample of 600 villages was taken from district Kanpur and average population per…

A:

Q: What proportion of 20% defective shipments will be accepted?

A: Given : N=50 , n=5 , p=0.20 , M=N*p=50*0.2=10 Here , X​​​​​​​Hypergeometric (n=5,N=50,M=10) The…

Q: One sample of n=12 scores has a mean of M=7, a second sample of n=8 scores has a M =12. If the 2…

A: The mean M of the combined sample is,

Q: 20. One sample of n 12 scores has a mean of M-7 and a second sample of n =8 scores has a mean of M…

A:

Q: 4. The bad debt ratio for a financial institution is defined to be the dollar value of loans…

A: The single mean t-test is used to compare the mean of a variable in a sample of data to a…

Q: . For a population with = 8, a raw score of X = 43 corresponds to z = -0.50.  What is the mean for…

A:

Q: 1) Suppose that 1,000 students took a Math examination wherein the maximum score that they can…

A: We assume that the score of the 1000 students is normally distributed with mean 70 and standard…

Q: 2. In a wood cutting process to produce rulers, the mean of rulers height is set to be equal 100 cm…

A:

Q: For a sample of 9 with a mean of 5994. How would i find the EX?

A:

Q: Suppose that we have a random sample of 8 students with final exam scores: 43, 55, 96, 33, 37, 78,…

A: Given  Sample size = 8 Sample data  43 55 96 33 37 78 62 20

Q: A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean is found to…

A: Given that - A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean…

Q: The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70,…

A: a. Since the population standard deviation is unknown and the sample size is small, the appropriate…

Q: 11. A sample of n = 6 scores has a mean of M = 13. If one person with a score of X = 3 is removed…

A: Given data: A sample of n = 6 scores has a mean of M = 13. If one person with a score of X = 3 is…

Q: 14. A sample of n = 9 scores has a mean of M of the scores is changed and the new mean is found to…

A: 14.

Q: Between what two values of Z​ (symmetrically distributed around the​ mean) will 83.84​% of all…

A:

Q: The scores on a standardized mathematics test for 8th grade children in New York State for a normal…

A: Given Information:  Population mean (u) = 70  Standard Deviation (s) = 10

Q: Suppose that 43% of people who enter a store will make a purchase. Random samples of people who walk…

A:

Q: One sample has a mean of M = 10 and a second sample has a mean of M = 20. The two samples are…

A: Given: mean of one sample M = 10, mean of second sample M = 20. For part 1: To find the mean for the…

Q: Suppose you wish to estimate a population mean based on a random sample of n observations, and prior…

A: The population standard deviation is 12.7, the margin of error is 1.6 and probability(or confidence…

Q: 41. A student calculates the value of r as +0.72 for a question comprising 5 Pars of observations…

A:

Q: A researcher selects all of the possible samples with n = 8 scores from a population and computes…

A: The mean of the sampling distribution of the sample mean is an unbiased estimator for population…

Q: Suppose an x distribution has mean μ = 6. Consider two corresponding  x  distributions, the first…

A: The provided information are:

Q: A sample of n = 64 scores is selected from a population with µ = 60 and σ = 10. If the sample mean…

A:

Q: The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70,…

A:

Q: Since p = 0.033, we have strong evidence to suggest that the distribution of proportions is not the…

A: Since, the chi-square test is conducted chi-square test statistic value = 19.63

Q: 8. Use the figure to the right, which shows the percentages of adults from several countries who…

A: Given Information: Country A: Sample size (n1) = 1003 Sample proportion (p^1) = 49% = 0.49 Country…

Q: n a sample of n = 5, four subjects have scores that are 1 point above the mean each. The 5th…

A: Let x be the mean  Sample size, n = 5 Four subjects have scores that are 1 point above the mean each…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: The provided information are:

Q: The ages of the 5 officers for a school club are 18, 18, 17, 16, and 15. The proportion of officers…

A: Solution: Given information: p = 0.6 Population proportion.  To check whether the sample proportion…

Q: 3. A principal wishes to estimate the average number of hours students spend doinghomework per…

A: Given that  The standard deviation of the previous study (σ) = 4.5 hours Confidence level (C) = 95%…

Q: One sample has a mean of M=8 and a second samplehas a mean of M=16. The 2 samples are combined into…

A: Given data M1 = 8 M2 = 16 n1 = 3 n2 = 5