investigation hypothesises that cholesterol levels in children may be affected by educating parents on proper nutrition and exercise. The sample size is 40 families child aged 10-15 years old with high cholesterol. Children mean cholesterol is 175 stand deviation 19.5 is there significant evidenceo of a relation in total cholesterol/ null value is 191 cholestrol

Q: Dr. R-P needs help in constructing a 99% confidence interval for the mean of the population of all…

A: Let  X: 80, 68, 72, 73, 76, 81, 71, 71, 65, 53 Mean, x¯=∑xn…

Q: Find the mean and variance for the binomial distribution,  P=0.45 and n=12

A: Answer:- Given, Sample size, n = 12 Probability of success on a trial, p = 0.45 Using formulas,…

Q: Let X be an exponential random variable with parameter A8, and let Y be the random variable defined…

A:

Q: 32. 2. The test​ statistic,is ______ ​(Round to two decimal places as​ needed.) 3. The​ P-value…

A: Hello! As you have posted 6 sub-parts, we are answering the first 3 sub-parts.  In case you require…

Q: According to a government study among adults in the 25-to 34-year age group, the mean amount spent…

A: Given that The adults in the age group , the mean amount spent per year on reading and entertainment…

Q: Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of…

A: Mean is =75,000 Let σ be standard deviation and x= 65,000

Q: (a) Use the fundamental matrix method, identify what the matrices Q and R are. Find (IQ)-¹ and…

A: (a) Using the fundamental matrix method, we can identify matrices Q and R as follows: Q = [0.85 0.1…

Q: Television viewing reached a new high when the global information and measurement company reported a…

A: Answer: From the given data, Mean (μ) = 7.56 Standard deviation(σ) = 2.8 X follows normal…

Q: Find p-hat and q- hat for the given data, X=280 and n = 580 Round to three decimals

A: Answer: From the given data, X = 280 n = 580

Q: Bob is a photographer who sells prints on consignment. Each week during the summer, Bob checks the…

A: Week Sold 1 15 2 10 3 11 4 16 5 18 6 14 7 8 8 9

Q: USE SALT The method of tree-ring dating gave the following years A.D. for an archaeological…

A: Answer  Given  1236,1229,1285,1229,1250,1264,1313,1250 sample size [n]=8 Confidence interval = 93%…

Q: Assume that the two samples are independent simple random samples selected from normally distributed…

A: The data for the women's and men's diastolic blood pressure are given.

Q: "A continuous probability distribution that is useful in describing the time, or space, between…

A: Here For  Exponential distribution

Q: Among fatal plane crashes that occurred during the past 55 years, 303 were due to pilot error, 78…

A: According to the given information, we have Total number of observations = 799

Q: A researcher wants to know if there is a statistically significant difference between Liberal Arts…

A: Sample 1 (Liberal Arts majors): x¯1=16.2s1=2.3n1=236 Sample 2 (Other majors): x¯2=13.7s2=9n2=321…

Q: Suppose that in a certain large population, the proportion of people that have blood type O is 0.32.…

A: The proportion of people that have blood type O is 0.32. then p(success)=0.32 1-p=0.68 n=5( no. of…

Q: Week Sales (1,000s of gallons) 1 17 2 22 3 19 4 24 5 19 6 16 7 21 8 19 9 22 10 21 11 16 12 23

A: To calculate the four week moving average forecast, we will take the average of the sales for the…

Q: Metric Material waste Order lead time Defect rate Inventory accuracy rate Customer satisfaction…

A: The data provided :

Q: Find the range for the given data, 45,22,36,78,28,46,74,32,85,13

A: According to the given information in this question We need to find the value of Range

Q: 3. The Lévy distribution with parameter > 0 is characterized by having the density f(x; 0): {√ = (b)…

A: pdf of x

Q: Using the given confidence interval to find the margin of error, Confidence interval :(5.69,8.72)…

A: confidence interval : (5.69,8.72) margin of error = ?

Q: Find the indicated probability and interpret the result. From 1975 through​ 2020, the mean annual…

A: Given data n=sample size=31 Standard deviations=1540 the probability that the mean gain for the…

Q: The life of light bulbs is distributed normally. The standard deviation of the lifetime is 30 hours…

A: Answer: From the given data, Mean ( μ) = 525 Standard deviation(σ) = 30 X follows normal…

Q: Let (Nt)t≥0 be a Poisson process. Explain what is wrong with the following proof that N3 is a…

A: There is a Poisson process Ntt≥0. We are required to find the mistake in the proof that N3 is a…

Q: An experimental design for a paired t test has 28 pairs of identical twins. How many degrees of…

A: Answer: From the given data, For a paired t test There are 28 pairs of identical twins Sample…

Q: Assume that the paired data came from a population that is normally distributed. Using a 0.05…

A: We have given the paired data that came from a population that is normally distributed.

Q: Guidelines for the Jolly Blue Giant Health Insurance Company claim that the average hospitalization…

A: According to the given information in this question We need to answer all the parts

Q: A university department chair believes that the afternoon section of a large survey class has a…

A: The given output is, The morning section samples is, nM=500 The afternoon section samples is,…

Q: In​ soccer, serious fouls result in a penalty kick with one kicker and one defending goalkeeper. The…

A: Claim: the direction of the kick is independent of the direction of the goalkeeper jump The null and…

Q: A shuttle operator has sold 20 tickets to ride the shuttle. All passengers (ticket holder) are…

A: a. X follows a binomial distribution with parameters n=20 and p=0.65. The probability mass function…

Q: Read the description of the variables and open the attached data before answering the questions…

A: 5. In the context of the study described, quantitative variables are those that can be measured…

Q: In a recent tennis​ tournament, women playing singles matches used challenges on 137 calls made by…

A: According to the given information in this question We need to construct 95% confidence interval and…

Q: study sample mean difference of X= 4.25 with SS = 128 for the difference scores. Is this mear…

A: n=9 Sample size x=4.25 Difference of sample mean SS=128 Diffeence of  Sum of square

Q: Which of the following statements are true?  There may be more than one correct statement; check all…

A: here output from R , for Pearson chi squared test is as following. χ2= 0.35453, df = 3, p-value =…

Q: A political campaign is interested in whether city 1 has more support for raising the minimum wage…

A: There are two independents samples which are city 1 and city 2. We have to test whether the level of…

Q: 1. For each of the transition matrices given below, list absorbing state(s), and determine the…

A: Any state is said to be absorbing state if probability of reaching to that state from same state in…

Q: (a) The table below shows the mean BMD and corresponding standard deviation for each of the two…

A:

Q: The manager of a local specialty store is concerned with a possible slowdown in payments by her…

A: n=25, s=8, sample mean X̄=54, population mean μ=50

Q: The numbers of words defined on randomly selected pages from a dictionary are shown below. Find the…

A: We have given data are  39,40,48,38,75,45,68,47,67,70

Q: A golf association requires that golf balls have a diameter that is 1.68 inches. To determine if…

A: Claim: The mean diameter of golf balls is 1.68 inches. The null and alternative hypotheses are:…

Q: To test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: Manufacturer 1 2 3 20 29 15 26 27 14 24 32 18 22 28 17

Q: How would the P-value change? The P-value would remain unchanged because the variability measured by…

A: Hypothesis is an assumption that is being tested.

Q: there is a relationship between hours of TV watched per day (x) and number of situps a person can do…

A: The results of the regression were:ŷ=ax+b a=-0.778 b=23.145 r2=0.707281 r=-0.841

Q: Two different simple random samples are drawn from two different populations. The first sample…

A: According to the given information in this question We need to find the conclusion and also find the…

Q: Events A and event B are mutually exclusive, P(A)=0.5 and P(B)=0.3 Calculate the following,…

A: Answer: From the given data, P(A) = 0.5 P(B) = 0.3 Events A and B are mutually exclusive,

Q: (a) Find trial control limits for X and R charts. (b) Repeat part (a) for X and S charts.

A:

Q: Find the sample mean for the following data set 82,52,59,41,59,53,69,30

A: Answer:- Given data set is,  82, 52, 59, 41, 59, 53, 69, 30  Using formula,  Sample mean = (Sum of…

Q: eneral, what does Hd represent? Temperature (°F) at 8 AM 97.6 Temperature (°F) at 12 AM 98.2 98.5…

A: According to the given information in this question We need to find mean of difference and standard…

Q: The table below gives the number of hours spent watching TV last week by a sample of 24 children. 77…

A: Given   Given data arrange in ascending 12, 22, 26, 31, 37, 44, 52, 52, 55, 57, 60, 62, 66, 67, 69,…

Q: The data below represents the number of T-shirts sold per week by a student who started his own…

A: From given data, T-shirts sold per week(x) Frequency(f) f*x 4 6 24 8 4 32 12 5 60 16 1 16…