7.P(-2.15

Q: chnology to answer this question. A simple random sample with n-56 provided a sample mean of 27.5…

A: Used formula C.I=(mean)+-(Z*S.D/sqrt (n)) Z value have standard value for particular class interval…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20-29 year old females. How many subjects…

A: formula for the sample size needed to estimate a population mean is

Q: The table shows the magnitudes of the earthquakes that have occurred in the past 10 years. Use the…

A: The table shows the magnitudes of the earthquakes.

Q: Below is a sample space diagram to show all the possible outcomes when a  fair coin and fair…

A: Fair coin and fair six sided die then possible outcomes are S={ (H,1) (H,2) (H,3) (H,4) (H,5) (H,6)…

Q: In a recent year, a study found that 75% of adults ages 18–29 had internet access at home. A…

A: The following information has been provided: The population proportion is p=0.75 The sample size is…

Q: Critical values for quick reference during this activity. Confidence level Critical value 0.90…

A: Solution-: Given: n=1000, x=351, c=0.95 We want to find 95% C.I.?

Q: where iprice is the log of the price of a house, bdrms in the number of bedrooms in the hea and sqr…

A: Given information: SS=50.875  n=72

Q: What would the graph be for the following? Categories Observed frequencies Proportion Expected…

A: Given : Categories Observed frequencies Proportion Expected frequencies E=np Republican 25 0.35…

Q: If A and B are independent events and that 0.3 = (PA and 0.7 = (PAUB), then .P(B) = 0.571 true Error

A: GivenA and B are independent events P(A)=0.3P(A∪B)=0.7

Q: The average score for games played in the NFL is 20.9 and the standard deviation is 9.3 points. 18…

A: GivenMean(μ)=20.9standard deviation(σ)=9.3sample size(n)=18

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.6…

A:

Q: m. Choose a and ß so that this is possible with a simp not make them equal. Choose Kc so that the…

A:

Q: The distribution of scores on a standardized aptitude test is approximately normal with a mean of…

A: Given that.   X~N( μ , ?^2 )   μ=510     , ?=105   Z-score =( x - μ )/?

Q: The average lifetime of a certain tire is 35,000 miles, and the standard deviation is 3,500 miles.…

A: Given   Average=μ=35000, standard deviations σ=3500    P(28000< X< 45500)=? Empirical rule:…

Q: Assuming that AP Music Theory scores are approximately normally distributed, what score was at the…

A: here given  mean  =  2.99  standard deviation =  1.32

Q: State the null and alternative hypothesis. Describe the Type I and Type II errors. A researcher…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer  first…

Q: A bank manager wants to determine the percent of time the bank's tellers are working and idle. He…

A: The following information has been given: The estimate of population proportion is p^=0.20. The…

Q: Each month a brokerage house studies various companies and rates each company's stock as being…

A: Given Total 72 companies

Q: 2. Determine each of the following areas and show these graphically. Use probability notation in…

A:

Q: year 1955 1958 1960 1961 1962 1965 1968 1975 1980 1986 1990 rabbit population 650 2180 5300 8200…

A: Given information: y=cekx Year 1955 1958 1960 1961 1962 1965 1968 1975 1980 1986 1990 Rabbit…

Q: < Aa The dice is thrown 180 times, the probability that the number 6 appears from 40 to 45 is…

A: By using normqal approximation, we can find the  mean of normal distribution, µ = n*p = 180*(1/6) =…

Q: Do men score higher on average compared to women on their statistics finals? Final exam scores of…

A: From the given information we conduct Hypothesis test.

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: The provided information is  α=0.05 The critical value is  zc=1.96  (from statistical table) The…

Q: For the past ten years, the daily high temperature on January 1 in a mountain town (in degrees…

A: Given data: For the past ten years, the daily high temperature on January 1 in a mountain town (in…

Q: Categorical Categorical Categorical Categorical Categorical ProudOrg StayOrg UnManRe CoWrkRe…

A: Given Information: ProudOrg StayOrg UnManRe CowrkRe Schooling Training Aware Engagement Trust 2…

Q: The value of the down-cumulative frequency of the fourth and fifth classes, respectively, for the…

A: Please find the solution below.

Q: strengths and criticisms of the scientific method in research

A: The scientific method is one of the ways of conducting research.

Q: 4. A fisherman catches 200 fish to sell. He measures the lengths, I cm of these fish, and the…

A: Given: A fisherman catches 200 fish to sell. He measures the lengths, l cm of these fish.

Q: A recent study indicated that 24% of the 150 women over age 55 in the study were widows. Round up…

A: Given That  Margin of error =E =0.02 Population proportion p=24%=0.24 90% confidence interval.

Q: 6. (a) A perfectly balanced coin is tossed 3 times and tail appears on all 3 tosses. Calcualte…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: Given that z is a standard normal random variable, find z for each situation. The area between 0…

A: From the provided information, The area between 0 and z is 0.4750.

Q: Identify which of the variables is most likely to be the explanatory variable, and which is most…

A: Given information: Class of 1950 Class of 2000 $2,500  $22,000  $2,700  $19,000  $4,000…

Q: Two boxes A and B contain 1. 2 red balls and 6 white balls, and B contains 2 red and 1 white ball.…

A: given   0.458 is the answer please check the below attachment

Q: The diagram shows the results of four different experiments using a dartboard.  Which one is an…

A: Experiments

Q: 7) إذا كان( ,4)x~b فأن ((P(x( < E(x هو : ب) 0.5123 0.2531 (¹ 0.1532 ( 0.3125 (

A: Given;x~b(4,12)  i.e. x has binomial distribution.where n=4  and p=12find P(x&lt;E(x))=?

Q: A time study of an assembly operation yielded the following observed times for one element of the…

A:

Q: A population consists of the four numbers 2, 3, 6, 9 with mean = 5 and variance = 7.5. Consider all…

A:

Q: If A and B are independent events and that 0.3= (PA and 0.7 = (PAUB), then .P(B) = 0.571 true Error

A:

Q: Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars,…

A: Given information: Table representing given data:   Compact cars Midsize cars full-size cars…

Q: Let X, Y ∼ U(0, 1) and X and Y independent. Find the PDF of U = min(X, Y ).

A: Find the distribution function of u and then pdf

Q: Let X₁, X₂,..., X be a r.s. from N(,0) and Y₁, Y₂...., be another independent r.s. from m…

A: Solution

Q: A food delivery service claims that it delivers orders to customers in 39.6 minutes or less, on…

A: The following information has been provided: The sample size is n=243. The sample mean is x¯=39.86.…

Q: The variable xx denotes the time taken in seconds for a computer link to be made between the…

A: It is given that the mean is 15 and the standard deviation is 3.

Q: 4.6 4.6 4.5 4.3 4.7 4.9 4.6 4.6 4.6 4.5 4.7 4.5 4.5 4.6 4.6 4.6 4.8 1. Use the ungrouped data that…

A: Given:Ungrouped data is given.

Q: The results of a search to find the least expensive round-trip flights to Atlanta and Salt Lake City…

A: Given: Sample size n = 14 Formula Used: Mean X = ∑Xin Range = Maximum value - Minimum value…

Q: A local department store took a random sample of 64 charge accounts and found that the average…

A:

Q: Please help with A B C

A: Given Information: Mean μ=9.1 Standard deviation σ=1.7 Sample size n=35

Q: Suppose a simple random sample of size n = 200 is obtained from a population whose size is N- 15,000…

A:

Q: A research center poll showed that 82% of people believe that it is morally wrong to not report all…

A: It is given that the probability that the people believe that it is morally wrong to not report all…

Q: 13. Suppose you have estimated that the 95 % confidence interval for B₁ is {0.750 , 0.950}. Which of…

A: Given that  Suppose you have estimated that the 95 % confidence interval for B₁ is {0.750 , 0.950}.…