economy estimates for automobiles built in a certain year predicted a mean of 24.8 mpg and a standard deviation of 7.2 mpg for highway driving. Assume that a normal distribution can be ed. Within what range are 68% of the automobiles? range for 68% of the automobiles is to mpg.

Q: er it is plausible that more than 80% of all students on campus have rarely or never used the campus…

A: A population of student that more than 80% of all students on campus have rarely or never used the…

Q: 3.80 Original sample: 17, 10, 15, 21, 13, 18. Do the values given constitute a possible bootstrap…

A: Bootstrapped sample: To estimate the parameter of the population sample is drawn repeatedly from the…

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A: Two sample t test: Two sample t test should be used for comparing the two population means if the…

Q: 5) Use R to find Z value from given area under Z curve. (a) Find zo when P(- Zo Zo)=0.32 (c) Find zo…

A: Solution: Let Z be the standard normal variable with mean 0 and standard deviation 1.  Z~N(0,1)

Q: How is validity realized in qualitative research?

A: In qualitative research : There are two types of validity criteria : 1 : Primary validity criteria…

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A:

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A: Given The data is as follows: Population mean, μ=178.3 Population standard deviation, σ=39.7

Q: An inspector inspects a shipment of medications to determine the efficacy in terms of the proportion…

A: The total number of pills (n) is 200.

Q: A particular fruit's weights are normally distributed, with a mean of 405 grams and a standard…

A: The question is about normal dist. Given : Popl. mean of weights of fruit ( μ ) = 405 gram Std.…

Q: A manufacturer claims that its compact fluorescent bulbs contain an average of 1.1 mg of mercury.…

A: given data  claim: μ= 1.1 mg two tailed test. find null and alternative hypothesis.

Q: The 20th percentile is how many inches?

A: The mean is 64 inches and the standard deviation is 2.5 inches.

Q: 5. Below is a histogram showing the distributions of exam scores from two different statistics…

A: Introduction: It is required to compare the two distributions represented by the two histograms.

Q: Exhibit 10-19 Two major automobile manufacturers have produced compact cars with the same size…

A: Hypothesis : A statement about the parameters of the probability distribution. t-Test is used when…

Q: πT 3. RVS X,Y with pdf f(x,y) = c sin(x + y), 0 < x,y < 2 Marginal pdfs and correlation coefficient…

A:

Q: The boxplot below shows salaries for CPAS and Actuaries in a town. CPA Actuary 30 40 50 60 70 80 90…

A:

Q: Suppose a jar contains 6 blue, 3 green, and 2 red marbles. What is the probability of randomly…

A: total number of marbles in jar = 6+3+2 =1111 marbles = 6 blue + 3 green + 2 redselecting randomly 3…

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A: The following information has been provided: The standard deviations are: s1=2.50s2=1.34 The sample…

Q: a) Research has shown at 55% of subscribers share their password with someone outside of their…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Let Z be the readings at freezing on a batch of thermometers  Given Z~N(0,1)

Q: Suppose that a random variable X has a continuous uniform distribution  a. Find the distribution of…

A:

Q: Males at Minimum Wage Males below Minimum Wage Females at Minimum Wage Females below Minimum Wage…

A:

Q: X 3 4 5 6 P(x) • 0.32 ? 0.25 0.25

A: x P(x) 3 0.32 4 a 5 0.25 6 0.25   we have to find P(x=4) =?   lets assume p(x=4) = a

Q: mean of 148.4 mg. (a) State the hypotheses for a two-tailed test of the claimed potassium content.…

A: Given mean=mu=149, standard deviations σ=148.4, Sample mean x̄=148.4, level of significance ɑ=0.01…

Q: A marketing firm wants to know if there is a difference in the best marketing strategy for new…

A:

Q: The number of typing errors made by a typist has a Poisson distribution with an average of three and…

A: 1. Suppose a random variable X defines the number of typing errors made by a typist per page.

Q: A group of people were asked if they had run a red light in the last year. 479 responded "yes", and…

A: Given that, 479 people had run a red light last year. Total respondents are n= 479+289 =768 x= 479…

Q: 8.7 In this problem we refer to Example 8.6. Suppose the random variables (X₁, Y₁), (X2, Y2),...,…

A: We have two independent random variables Xi,Yi i=1,2,....,n and for each i, they are distributed as…

Q: Determine the null and alternative hypotheses for the study that produced the data in the table. A…

A: The given contingency table is, Claim: Test whether there is an association exists between age and…

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A:

Q: I conduct an online study to determine whether rewards reduce procrastination. All participants are…

A: The possible threats for the internal validity: Maturation: Increase of time may influences the…

Q: The amount of potassium in food varies, but bananas are often associated with high potassium, with…

A: a) Suppose a random variable x defines the amount of potassium intake in a medium-sized banana.

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

Q: 9.In a recent poll, 23% of the respondents supported candidate A, 19% supported candidate B.13%…

A:

Q: ook at the picture to anwer these questions: How many samples are included in the dotplot? What is…

A: The output shows the bootstrap dotplot of mean.

Q: Find the p-value using Excel (not Appendix D): (Round your answers to 4 decimal places.) (a)…

A: Given  All p value calculated from Excel

Q: b. Find the quartic function that is the best fit for the data in the table. X y 1 8 2 0 3 6 4 24 5…

A: We have to calculate quadratic equation for mentioned data :

Q: 6. Use R: Suppose the yearly income of people in Minnesota is normally distributed with mean 45700…

A: The given mean is 45700 and standard deviation is 2830.

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A: Here, hypothesis testing process. Theory, experiment....... Conclusion. We will arrange in order.

Q: The 87th percentile is (Round to two decimal places as needed.)

A: It is given that  Mean, μ = 50 Standard deviation, σ = 7

Q: Given below is the revenue that Tesco recorded ov location over the last five vears:

A: Year Number of stores UK &amp; ROI Revenue Central Europe Revenue Tesco Bank Revenue Total Revenue…

Q: What is the coefficient of determination for Data Set​ B?   Full Data​ Set:    Data Set A Data Set B…

A:

Q: Medical School Applications A medical college dean read that the average number of applications a…

A: Given that  Sample size n =29 Sample mean=8.7 Population standard deviation =2.6

Q: For a standard normal distribution, find: P(0.8< z < 2.42)

A: According to given question,  We have:-   z1= 0.8  and z2 = 2.42To find :-  P(z1&lt;z&lt;z2) Or…

Q: A random sample of 300 items reveals that 216 of the items have the attribute of interest. (A)…

A: Given information We have given that; a random sample of 300 items reveals that 216 of the items…

Q: The mean potassium content of a popular sports drink is listed as 149 mg in a 32-oz bottle. Analysis…

A: a) Suppose μ is the population mean potassium content in a particular sport drink.

Q: Estimated Marginal Means Reward Time 10.0- 7.5 5.0 2.5 T .. Contingent Non-contingent No reward…

A: The objective is to compare the average completion time for each defined pair of types of rewards.…

Q: 3) Suppose in MSU, 12 out of 200 students are covid positive. If 300 students are selected for COVID…

A: 12 out of 200 students are covid positive p(covid positive)=12200=0.06here p=0.06q=1-0.06=0.94 n=300…

Q: according to flightstatus.com American Airlines flights from Dallas to Chicago are on time 80% of…

A: Givenpercentage of flights on time =80%No.of flights are randomly selected=20

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A: The given data indicates the favorite subject area of a sample of students at the local high school.…

Q: A pizza parlor offers a choice of 16 different toppings. How many 2-topping pizzas are possible?…

A: Given information- We have given that a pizza parlor is offering 16 different types of toppings. We…