012 = √n1(012+d12)+n2(022+d22)/n1+n2 is

Q: According to the World Health Organization, the average height of a one-year-old child is 29". You…

A: The test statistic is -4.4721 and the p-value is 0.00013.

Q: Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly…

A: The null and alternative hypotheses are: H0:σ=4 H1:σ<4

Q: We want to conduct a hypothesis test of the claim that the population mean germination time of…

A: Given datax=16μ=15.9s=1.5a) Here n=10 which is small and standard deviation is unknownso here we…

Q: match each step of the scientific method with the statements that best corresponds to it

A: The objective is to match each step of the scientific method with the statements that best…

Q: What is the probability of randomly selecting someone who is Female and has a New product? New…

A: From the provided information,   New product  Old product Totals Male 27 11 38…

Q: The probabilities of events A, B, and An B are given. Find (a) P(A U B), (b) the odds in favor of…

A: Since you have posted a question with multiple sub-parts, we will first 3 sub-parts for you. To get…

Q: (a) Consider a t distribution with 30 degrees of freedom. Compute P(−1.39 < t < 1.39). Round your…

A: Solution Given That , (a) Consider a t distribution with 30 degrees of freedom. Compute P(−1.39 &lt;…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: (b) Obtain the 98% confidence interval for the difference between two proportions. The 98%…

Q: Calculate the correlation coefficient, r, for the data below. x-13 -11 -4 -7 -9 -10 -8 -6 -5 -12…

A: X Y X.Y X2 Y2 -13 -16 208 169 256 -11 -14 154 121 196 -4 3 -12 16 9 -7 -5 35 49 25 -9…

Q: Bar graphs and histograms look similar, however there are several important differences. Which of…

A: Bar graphs and histograms look similar, however there are several important differences. Which of…

Q: A simple random sample of size n=50 is obtained from a population with a mean of 46 and a standard…

A: Suppose the variable of interest is X.

Q: with that of the shock absorbers pro -n, one of the manufacturer's and one cted and installed on the…

A: Table for the result of examination can be shown as, Car Manufacturer Competitor Difference 1…

Q: Consider a t distribution with 13 degrees of freedom. Compute P(−1.86 < t < 1.86). Round your answer…

A: (a) Consider a t distribution with 13 degrees of freedom. The objective is to compute P(−1.86 &lt; t…

Q: TABLE 8.6 bond proposal for school construction will be submitted to the voters at the next…

A: The question is about confidence interval for a difference between two popl. prop. Given : Sample…

Q: Words were displayed on a computer screen with background colors of red and blue. Results from…

A: According to policy we supposed to answer 3 part for remaining repost the question.

Q: (a) Find the correlation coefficient and explain what it tells us? (b) Conduct a lack of fit test…

A: Value of x and y given We have to calculate correlation coefficient and equation for the given data.…

Q: Explain the difference between the z-test for μ using rejection region(s) and the z-test for μ using…

A:

Q: The random variable x represents the number of credit cards that adults have along with the…

A: Given data is x P(x) 0 0.07 1 0.68 2 0.21 3 0.03 4 0.01

Q: What is the Discrete Standard Deviation for the following numbers? X P(X) 0.13 0.52 0.04 0.02 0.29 0…

A: The provided information is  x P(X) x*P(X) x2*P(X) 0 0.13 0 0 1 0.52 0.52 0.52 2 0.04 0.08…

Q: if you know that data (14, 10,12,10, 8,6) find the :- Mode, median, mean?

A: Given,14, 10, 12, 10, 8, 6sample size(n)=6

Q: Given: Student Pre-test Scores Post-test Scores 1 84 85 2 78 86 ITT 3 88 89 4 79 83 5 84 87 Find:…

A:

Q: Identify the data set's level of measure ages of students in a statistic class O A. ordinal O B.…

A: Given that ages of students in a statistic class

Q: After the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they…

A: It is given that, out of 25 adults,16 said they liked the movie, whereas out of 50 teenagers, 39…

Q: F. For the following data set, complete the table and determine the mean, median, mode and standard…

A: The answer is attached below,

Q: confident that the expected monthly withdrawals in a bank will be within a confidence interval of ±…

A:

Q: A fair coin is tossed, and a fair die is thrown. Write down sample spaces for (a) the toss of the…

A:

Q: The quarterly returns for a group of 66 mutual funds with a mean of 3.1% and a standard deviation of…

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

Q: Use the frequency distribution to the right, which shows the number of voters (in millions)…

A: Required probability is P(age range not between 18 to 20 years old)

Q: uppose the systolic blood pressure (in mm) of adult males has an approximately normal distribution…

A: Given that, (a) The empirical rule plot is, The labels for the areas of the 8 regions in the above…

Q: The probabilities of events A, B, and An B are given. Find (a) P(AUB), (b) the odds in favor of and…

A:

Q: College Units Frequency 0-24 4 25-49 3 Find the standard deviation for the grouped data. 50-74 6…

A: Solution-: We have following table: College Units Freq (fi) 0-24 4 25-49 3 50-74 6 75-99…

Q: A card is drawn from a deck of 52 playing cards. a) Find the odds against drawing a black card or a…

A:

Q: Q4/a/ In a study to show the relationship between a person's weight (kg) and height (cm), a random…

A: Frequency distribution

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

A: The standard normal variable is z, which follows the normal distribution with the mean of 0 and…

Q: Consider the following data for two variables, x and y. x 22 24 26 30 35 40 y 13 20 34 35 40 36 (a)…

A: "Since you have posted a question with multiple sub-parts, we'll solve the first three sub-parts for…

Q: Answer 14-19 only

A: Population is the whole measure that are used for the study. Sample is the subset of population and…

Q: inal illness that is accompanied by intense pain. As a first atter thesis, he conducts an experiment…

A: Neutral Area Lesions Thalamic Lesions 0.8 1.9 0.7 1.8 1.2 1.6 0.5 1.5 0.4 1 0.9 0.9…

Q: 2. Melvin surveyed the price of unleaded gasoline at gas stations in Davao city and Tagum City. The…

A: The following data has been provided: a.) Davao city  45.90,48.75,48.90,49.01,45.00,47.90

Q: a. "Patient": Variable? or Data? b. "Patient": Numerical? or Categorical? c. "Patient": Discrete?,…

A: As per our company guidelines we are supposed to answer only first 3 sub parts of question. Kindly…

Q: You are management for a chain of department stores. Your analytics team believes that the…

A: Given datayou are a management for a chain of departement stores.Here n=48x=17p=25%

Q: Q4/B - A factory for the production of electric lamps, consisting of 12 identical machines.…

A: Number of machines(N)=12 Number of samples(n)=4

Q: Is there any systematic tendency for part-time college faculty to hold their students to different…

A: Given : n1=125  x1=2.7386  S1=0.63342 n2=88 x2=2.8639 S2=0.50241 We have to calculate t stastics and…

Q: QUESTION 3 A machine that produces a major part for an airplane engine is monitored closely. In the…

A: Given,margin of error(E)=0.04standard deviation(σ)=0.30α=1-0.95=0.05α2=0.025Z0.025=1.96      (from…

Q: A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2732…

A: Given Information: Sample 1: n1=2732 x1=36 Sample 2: n2=7859 x2=17 Significance level α=0.01

Q: Determine the size of the sample space of a lottery drwing consists of 5 randomly drawn numbers from…

A: Numbers available 1 to 14.  Select 5 numbers.order matters.repeatation allowed. Find size of sample…

Q: Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random…

A: From the provided information, Sample size (n) = 18 Sample standard deviation (s) = 0.12 Level of…

Q: College Units Frequency 0-24 4 25-49 3 Find the standard deviation for the grouped data. 50-74 6…

A:

Q: A certain person considers that he can drink and drive: usually he believes he has a negligible…

A:

Q: Use the ogive to the right to approximate the sample size.

A: Here Given  Ogive  of No of students and No of Hours

Q: stander deviation of population to 10, 12, 13, 14, 17 equal .A 3 .B 2 .C 6 1 need answer within 3…

A: Given data is10,12,13,14,17sample size(n)=5