C. Tell whether the given data is descriptive or inferential statistics. 1. The average age of the students in a statistics class is 13 years. 2. There is a relationship between smoking cigarettes and getting emphysema. 3. The mean of a sample set of scores is calculated to characterize the population.

Q: The average time for a one way trip for a student to go to school is 24 minutes with a standard…

A: probability that the mean time to commute is faster than 20 minutes is 0.9997

Q: The National Center for Health Statistics reports that the systolic blood pressure for males 35 to…

A:

Q: Use regression to find an exponential function that best fits the data given below. 2 4 8 22.29 10…

A: Given exponential function in the form : y = ecx+d We need to find the value of   c & d  using…

Q: A vendor specializing in outdoor gear offers customers three wWays telephone using a catalog. Of the…

A: The formula for Probability is as follows: Probability=Number of favourable casesTotal number of…

Q: the 85.7% confidence interval estimate for p was (0.14, 0.16). Find p′ and ME.

A:

Q: The mass of packages from a particular machine are normally distributed with a mean of 100g and…

A:

Q: For general n, we have fx1),X(2) X(n) ("1, #2, • n!f(x1)f(x2)·…· f(In) %3D which holds for 1 < x2<.<…

A: For general n, we have to prove that: fX(1), X(2), ....X(n)(x1, x2,....,xn) = n!f(x1)f(x2)....f(xn)…

Q: Given the probability density function f(x) = over the interval (1, 3], find the expected value, the…

A: Given that!  f(x) = 1/2  at (1, 3)  By using expectation and variance rule we solve this problem.

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 6. Hov many…

A: Given that  Margin of error=E=0.005  ?=1.5 98% confidence level

Q: From the data given below construct a business activity index number both weighted and unweighted.

A:

Q: were randomly assigned to two groups. The treatment group consisted of 200,024 children given a…

A: Given

Q: sample of 153 was selected from a large population. 69% of the sample had a characteristic of…

A:

Q: The weight of all cans of coffee has a standard deviation of 0.39 ounces. A sample of 14 cans of…

A:

Q: State the research hypothesis and null hypothesis       Would the researchers use a one- or…

A: From the above data we are given that  A researcher wants to know whether people who regularly…

Q: B. Determine whether the numerical value is a parameter or statistic. 1. If I survey all the girls…

A: The measured value (i.e., the various numerical values in this case), that defines the…

Q: Use the zz-score formula, z=x−μσz=x−μσ, and the information below to find the value of xx. Round…

A:

Q: Illustration 22.2. Compute the gross and net reproduction rates. from the data given below: Age…

A:

Q: You are conducting a hypothesis test where the null hypothesis is that mu is less than or equal to…

A:

Q: 2. The following data give the household power (in kW.) usage of two areas in Selangor. Kajang Bangi…

A: There are two independent samples which are Kajang and Bangi. We have to test whether there is a…

Q: INSTRUCTION: EXPLAIN THE STEP BY STEP SOLUTION IN SENTENCES/PARAGRAPH. An adult rabbit's average…

A: Given that.   X~N( μ , ?^2 )   μ=30  , ?=4   Z-score =( x - μ )/?   First I want to find z-score…

Q: The mass of packages from a particular machine are normally distributed with a mean of 200g and…

A: From the provided information, Mean (µ) = 200 Standard deviation (σ) = 9 X~N (200, 9) Here X be a…

Q: Suppose that the local sales tax rate is 7% and you purchase a car for $14,600. a. How much tax is…

A: Find how much tax is paid? what is the total cost?

Q: List the five steps of hypothesis testing and explain the procedure and logic of each.

A: Given that  List the five steps of hypothesis testing and explain the procedure and logic of each.

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Given Those test scores are normally distributed with a mean of 0 and a standard deviation of 1.

Q: What is a total weight of 11 basketballs that weight 20 ounces each?

A: The weight each basketball is 20 ounces. We have to calculate total weight of 11 basketballs.

Q: how many water specimens are required in the sample?

A: It is given that Margin of error E = 0.8 Population SD = 5.9 Level of confidence = 95% The critical…

Q: How much will person pay for 6.2 pounds of bananas at a price of 0.93$ per pounds

A: Given that  Number of pounds of bananas = 6.2 pounds Cost per pound of bananas = $0.93   We know…

Q: 5. A) Find the 90°o confidence interval for the mean of the normal distribution: 600, 667, 654, 663,…

A:

Q: Some fruit are sold whose weights follow a normal distribution such that X-N(90, 16) If the heaviest…

A: (9) X~N(μ, σ2) = X~N(90, 16)  Let X be minimum weight of large fruit from normal distribution with…

Q: hether they go shopping at the supermarket/pharmacy. How many times they shop at the…

A: Respondent Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 1 28 F YES 3 NO NO $5 NO 2 35 M YES 2 NO NO $3 NO 3 53 F…

Q: bag contains many hats of several colors 100 John's I made from this without replacement. suppose…

A: Given that ;  μ = 40 ? = 5 n = 100 By using standard normal distribution we solve this problem.

Q: A vet wants to determine the proportion of household pets that have pet insurance. What size sample…

A: Given that  Margin of error=E=0.06 ,  90% confidence

Q: The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0…

A: X follow the uniform distribution i.e. u ( 50.0 , 52.0)  By using the uniform distribution we find…

Q: The Joint Distribution of the Minimum and, Maximum Def EX2: pyoof It Fx X) (x, y) = P(X(1) <x, X(n)…

A: We need to prove the joint distribution of the minimum and maximum: FX(1) ,X(n) (x,y)=P(X(1)≤x,…

Q: Choose the correct type of data and level of measurement for green. I. Discrete II. Qualitative II.…

A: We know that Nominal data: Nominal data measure qualitative data and it is the name of variable.…

Q: Find the specified probability. Round your answer to four decimal places, if necessary.…

A: Answer :- P(−1.55 &lt; z &lt; 0) = 0.4394 Explaination is given in the next step.

Q: Dr. Guidry conducts a study examining the relationship between the number of friends one has and the…

A: Given Information: Dr Guidry is interested in examining the relationship between the number of…

Q: The R-squared of a regression of an asset’s excess returns against a multi-factor asset pricing…

A: Given information: The information about coefficient of determination is given.

Q: Illustration 21.12. Given N=1500, (A)=383, (B)=350, (AB)=35. Prepare 2x 2 fold contingency Table.…

A:

Q: If we say the results of a hypothesis test are________________________, this means they are unlikely…

A: Statistical significant defines occurrence by chance.

Q: A population has mean 75 and standard deviation 12. (a) Random samples of size 121 are taken. Find…

A: Given that  Population  mean μ =75 Population standard deviation =12

Q: A sample of 200 individuals are tested for their blood type is given in the first table, and the…

A: The categorical variable is blood type. It has 4 types. We have to test whether the stated…

Q: Illustration 22.2. Compute the gross and net reproduction rates. from the data given below: Age…

A:

Q: year Calculate the mode.

A: We have given that the data represent the number of paid public holidays per year from selected 9…

Q: Illustration 21.11. In a sample study about the coffee habits in two towns following data was…

A:

Q: What is the point estimate of the population mean? What is the point estimate of the population…

A: We have given that the data from the normal population.     Note: According to Bartleby expert…

Q: A city planner wants to estimate the average monthly residential water usage in the city. He…

A: The confidence interval is an alternative to hypothesis testing.

Q: Consider the following hypotheses tests involving the ?2-distribution. (a) Determine the p-value…

A: Given that  a..Determine the p-value for Ho: P(1) = P(2) = P(3) = P(4) = 0.25, with χ2 = 10.44...…

Q: Consider a binomial experiment with n = 20 and p = 0.4. Calculate the P(X ≥ 10). Do not use normal…

A: Given that  n=20 , p=0.4 X~Binomial(n=20 , p=0.4)

Q: An adult rabbit's average length is 30cm, with a standard deviation of 4cm. What is the probability…

A: Given data is Mean(μ)=30 cmstandard deviation(σ)=4 cm