Which of the following probabilities indicates a relationship that is not statisti­cally significant? A:    .001 B: Can't tell because statistical significance depends on degrees of freedom C:   .10 D:   .01 E:   .05

Q: If Var(X) = 4, Var(Y) = 16, Cov(X,Y) = 3, and E(X) = E(Y) = 0, what is E(XY)? Enter the exact…

A: Var(X)=4 Var(Y)=16 Cov(X,Y)=3 E(X)=E(Y)=0

Q: The likelihood that a bulb is defective is 9%, on a particular line. Ten light bulbs are randomly…

A: Answer: From the given data, Sample size(n) = 10 p = 9% = 0.09

Q: Maddy's Patties has a burger patty making machine which is supposed to produce patties that weigh…

A: Sample size n =8 111.98 111.59 112.76 113.12 113.50 113.53 113.15 111.56 x x2 111.98 12539.5204…

Q: For a test: HO: μ = 63 H1: μ > 63 X bar = 54, standard deviation (s) = 14 and sample size(n) = 225…

A: Answer: From the given data, mean (X¯) = 54 Standard deviation(S) = 14 Sample size(n) = 225 μ = 63

Q: a. Identify the actual number of respondents who rated themselves as above average drivers. 1098…

A: Use the results from a survey of a simple random sample of 1234 adults. Among the 1234 respondents,…

Q: Academic year Biology 15 Freshman Sophmores Juniors Seniors ologies stics. Step ther this Majors Non…

A: Academic Year Biology Majors Non biology Major Freshman 15 11 Sophmores 11 19 Juniors 11 15…

Q: Define μ as the population mean forecasting error and formulate the null and alternative hypothesis…

A: (1) let first we define the null and alternative hypothesis H0:μ=0H1:μ≠0 Explanation: The null…

Q: 7 a) Suppose that X₁, X2, ...X24 are a random sample from a Normal distributio N(µ, σ²), where both…

A: Let X1, X2,......X24 be a random sample from a normal distribution where μ and σ2 are unknown. Null…

Q: The weights of newborn children in the United States vary according to the normal distribution with…

A: Sample size, n=20 Population mean, μ=7.5 Population standard deviation, σ=1.25 Sample mean, x¯=7.2…

Q: ← Fill in the blank A Type 1 error is the mistake of when it is actually true.

A: Here use definition of type 1 error

Q: supported universal background checks for all gun sales in the U.S. In a similar poll from 2015, 276…

A: Sample size n1 =486 , n2=321 Favorable cases x1=447 , x2=276

Q: 8-1- lower tail area 1-09813 0.0183 x x

A: A type II error will occur if H0 is not rejected but it is false. The probability of a type II error…

Q: If n=390 and p (p-hat) -0.07, find the margin of error at a 99% confidence level

A: The sample proportion is 0.07. The sample size n is 390.

Q: Let the sample mean estimator be given by XN normal with mean µμ and variance o2. Consider a…

A: The sample means estimator is,  XN=∑i=1NXiN Xi's are i.i.d normal variables with mean μand variance…

Q: N Let the sample mean estimator be given by XN Σ1 Ei=1 Xi N Suppose all the Xs are i.i.d. normal…

A: It is given that, Xs are i.i.d. normal variable with mean µ and variance σ2.

Q: If a graduate student is randomly selected, find out the probabilility that that particular…

A: To find the prob. that student's birthday is on the 31st day of any month.

Q: Stats Air operates a daily flight between Melbourne and Coffs Harbour that has operated for three…

A: We are given: Sample size (n) = 49 Sample mean ($\bar{x}$) = 289.42 Sample standard deviation (s) =…

Q: A particular coin is biased. Each time it is flipped, the probability of getting a head is P(H) =…

A: Let X be the number of heads shows up follows binomial distribution with n=10 and P(H)=0.7.

Q: Consumer Banker Association released a report showing the lengths of automobile leases for new…

A: Lease Length in Months Percent of Leases 18.5 13.30% 30.5 38.80% 42.5 26.50% 54.5 20.70%…

Q: s, how should the null hypothesis be stated?

A: The two types of drugs are given A and B. To write the null hypothesis.

Q: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1394…

A: That is, there is no evidence to conclude that the men and women do not have equal success in…

Q: The following samples are independently selected from two populations which follow the normal…

A: Suppose the samples are independently selected from two populations that follow the normal…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Margin of error (E) = 0.042  99% confidence interval for the true population proportion is  0.492…

Q: a) Test the article's claim using the appropriate hypothesis test and an alpha level of .05.  b)…

A: Let μ be the population wait time. Given that, No. of patients (n)=49Popualtion mean (μ)=210…

Q: A local corporation in New York uses trend projections as well as  seasonal factors to simulate…

A: Following output was generated for a given financial year by a guided simulator: 0, 1, 0, 2, 2, 0,…

Q: Hello,  For some reason, my screen looks like this:     Could you help me trouble shoot?

A: Given that the regression equation is y^= 23.2642+0.3174x

Q: Which is cheaper: eating out or dining in? The mean cost of a flank steak, broccoli, and rice bought…

A: Let the population follows normal distribution approximately with unknown variance in such cases z…

Q: You are conducting a study to test a claim that the mean income of regular Disney visitors is…

A: The hypothesized mean  μ=85000 The sample size n=119 The sample mean x¯=82148 The population…

Q: 2. A researcher wants to determine which of three advertisements is most likely to encourage teens…

A: Participant No  Cues Generic Cues Smoking Related Cue A 2 5 5 B 3 5 6 C 1 4 5 D 4 5 7 E 4…

Q: Consider the value of t such that 0.025 of the area under the curve is to the left of t. Step 2 of…

A: Degree of freedom =df =10

Q: A random sample of 20 rural health midwives underwent a training program on using the IMCI tool for…

A: A random sample of 20 rural health midwives underwent a training program on using the IMCI tool for…

Q: A sleep researcher is assessing the impact of melatonin supplements on time to fall asleep for…

A: Let us consider two samples taken randomly Each participant in two samples are independent of each…

Q: Find the range for the given data set, 34,16,56,28,47,54,87,69,26,33

A: Answer: Given data set is, 34,16,56,28,47,54,87,69,26,33 Sample size (n) = 10

Q: Samuel Morse determined that the percentage of "t's" in the English language in 1836 was 10%. A…

A: Population proportion of letter t in English P=10%=0.10 Sample of size n=750 in which number of t's…

Q: A class is made out of 22 students, The sample mean is 26.91, and the sample st. dev is 10.46. ? a=…

A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 26.91 Sample standard…

Q: n which of the following situations is it reasonable to use the procedure to obtain a confidence…

A: The assumptions of a confidence interval depend on the type of interval being calculated. Here are…

Q: 1. A very large bag contains more coins than you are willing to count. Instead you draw a random…

A: Coins in Bag Q D N P 26 24 24 26 a

Q: 8 S 4 2 1 s width= 6 11 ple size = 16 data Q ed on the histogram above, what is the class width? 21…

A: Frequency distribution table Class interval  frequency  1-6 10 6-11 3 11-16 9 16-21 7…

Q: All normal distributions: A. have sampling distributions B. all of the above C. none of the above…

A: All normal distributions are

Q: Let X be an arbitrary random variable with mean μ and standard deviation o. Let x be its sample…

A: Here given sample size = n = 100 X is arbitray random variable have mean = µ and Standard deviation…

Q: The following table shows the number of wins eight teams had during a football season. Also shown…

A: The data shows the number of wins eight teams had during a football season.

Q: if SS total = 8.9 and SS between = 4.5, What is SS error ?

A: Answer: From the given data, SS total = 8.9 SS between =4.5

Q: A researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to…

A: A researcher hypothesizes that Drug A is more effective than Drug B.

Q: 10. Calculate the interval. Write the formula with the correct values inserted. * I ME (0.4162 11.…

A: From the obtained results, the sample proportion is 0.075 and the margin of error is 0.012936.

Q: Using the results from the last question, if 5000 rods are manufactured in a day, how many should…

A: Using the results from the last question, if 5000 rods are manufactured in a day, how many should…

Q: Suppose z is the standard normal variable. Draw the normal curve for each of the following…

A: P(Z<z)=0.1314

Q: a. Calculate a 95% confidence interval for the mean number of hours slept in the Population, using…

A: Data 4.5 5 5 6 6 6 6 6 6 6 6.3 6.5 6.5 6.5 6.5 6.5 6.5 6.5 7…

Q: a. What is the distribution of X? X - N( b. What is the distribution of X?X - N c. What is the…

A: AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS  Here Given The amount of coffee that people drink…

Q: Find the mean and variance for the binomial distribution, P=0.29 and n= 13 Round to two…

A: Answer: From the given data, For the binomial distribution, P = 0.29 n = 13

Q: Use the one-proportion z-interval procedure to find the required confidence interval. Of 94 adults…

A: Here Given  Sample Size=n= 94 X=62 SO  p¯ = Xn=6294= 0.659