Complete the statement: If a null hypothesis is not rejected at the 5% level of significance, it A will always be rejected at the 1% level will sometimes be rejected at the 1% level will also not be rejected at the 1% level D None of these alternatives are correct.

Q: Devon’s tennis coach says that 72% of Devon’s serves are good serves. Devon thinks he has a higher…

A: Given Devon’s hypotheses are:  H0: p = 72% and  Ha: p > 72%, where p = the true proportion of…

Q: Basketball players drink 2.3 liters of water (on the average) with a standard deviation of 0.9 liter…

A:

Q: The number of typographical errors per page of a certain newspaper has a Poisson distribution, and…

A: It is given that the number of hypographical errors per page follow Poisson distribution with…

Q: Find a confidence interval for H or p. a. A random sample of 19 adults participated in a four-month…

A: We have given that,  (a)  Sample mean (x̄) = 9.2, sample size (n) = 19 and standard deviation (s) =…

Q: Suppose a test is given to 20 randomly selected college freshmen in Ohio. The sample average score…

A: Given Data : For Sample 1 x̄1 = 12 n1= 20 s1= 4 For Sample 2 x̄2= 8 n2…

Q: e bakery should use raisins. ound the final answer to the nearest whole number as needed. Round all…

A: Given For a batch of 5200 oatmeal and raisin cookies, probability of a cookie having no raisins…

Q: If the value of z=1.27 with 95% confidence to the right tail. What is the correct decision with the…

A: Identify the correct decision for the given hypotheses. The correct decision for the given…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: Suppose that E and F are two events and that P(E and F)=0.48, P(F)=0.55, and P(E)=0.5. What is P(F…

A: Suppose that E and F are two events and that P(E and F)= 0.48 P(F)=0.55 and P(E)=0.5 What is P(F |E)…

Q: According to a​ report, the standard deviation of deviation of monthly cell phone bill was ​$48.93…

A: a)   Null and alternative hypotheses:   The hypothesis, which is pre assumed as true, tentatively…

Q: *Questien Comptetion Stanu LSL USL Within 0.854 Overall Within 8 Cp CPL 0.856 CPU 0.852 0.852…

A: Here's, we know when we have Cp < 1 then process is not in control.

Q: Can you answer D please

A:

Q: The JB test-statistic is given by  ?

A: Since, the question to be answered is not specified, we'll be answering the first question only.…

Q: A bottling company uses a filling machine to fill plastic bottles with a popular cola. The bottles…

A: Let X denote the bottle contents vary according to a normal distribution with mean of μ=203 ml and…

Q: The IQ scores of 50 students are given below.   106 118 90 97 108 91 105 85 89 105 92 108 112 105…

A: We use 85-89 for the first class and use the same width for each subsequent class.

Q: In a community with a population of 5,000 people where 60% were male, 200 vehicular accidents were…

A: Sex ratio is simply the ratio of the number of males and the number of females in a population. For…

Q: A 95% confidence interval for the difference between the mean glucose content of two biscuit…

A: The confidence interval is an estimation procedure.

Q: A popular restaurant takes a random sample of 25 customers and records how long each occupied a…

A:

Q: 2. Find the proportion p and â for each of the following: a. X = 145 , n = 345 b. X245, n 545 C. X =…

A:

Q: b. In the year 2000, a survey of 1189 U.S. adults were asked who they felt was the greatest…

A: Given,n=2000x=331p^=xnp^=3312000=0.16551-p^=1-0.1655=0.8345α=1-0.90=0.1α2=0.05Z0.05=1.645…

Q: the .14 ,20 ,12 ,17 ,13 ,14 ,9 ,10 ,17 variance is 12.5 O 10.5 2.5 O

A: Given n=9

Q: Q5. The diameter of contact lenses has a mean of 1 cm and a standard deviation of 0.02 cm. If you…

A: From the provided information, Mean (µ) = 1 cm Standard deviation (σ) = 0.02 X~N (1, 0.02)

Q: What is the expected frequency for the "31-64 yr" and "received recommended care" category? tonthr…

A: The expected count is calculated as E = (row total × column total)/total

Q: Example 2.31 Incidence of a rare disease. Only 1 in 1000 adults is afflicted with a rare disease for…

A:

Q: These are the times, in minutes, that a group of people took to answer a Sudoku puzzle. 5, 4, 11, 8,…

A: We have given data are 5,4,11,8,4,43,10,7,12  Here we have to apply appropriate measure of central…

Q: Suppose a test is given to 20 randomly selected college freshmen in Ohio. The sample average score…

A: T is small sample test and z is large sample test.

Q: The Normal model N(65, 5^2) describes the distribution of heights of college women (inches). (a)…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A researcher has found a strong relationship between level of education and income and concludes…

A: Introduction: The error in the conclusion must be identified.

Q: . What are some common statistics used in the field of criminology/criminal justice?

A: Statistics play an important role when it comes decision making in criminology.

Q: The average score of local students on a college entrance exam is 110 with standard deviation of 15.…

A: Empirical rule: According to empirical rule, approximately 68% of data falls within one standard…

Q: When describing a data set, the mean is used with and the median is sed with Z-scores are used to…

A: When describing a data set, the mean is used with average and the median is used with middle value.

Q: manufacturer knows that 9% of the products it produces are defective. Find the probability that…

A: Here's by using Binomial Distribution, probability of success is 0.09 and number of trial is 7.

Q: A 95% confidence interval for the mean can be interpreted to which of the following? You can be 95%…

A: Given, The 95 % confidence interval for the mean.

Q: The prices of 400 t-shirts range from Php 50 to Php 350. Construct a table with 11 classes where…

A: We are given that the prices of 400 t-shirts range from Php 50 to Php 350. Number of classes = 11

Q: he College of Engineering of a State University gives an entrance exam to incoming freshmen. Those…

A:

Q: Find the P-value: Type your answer as a decimial rounded to three decimal places. Do not type a…

A: Hypothesis test are used to determine the significance between the sample and population. Each…

Q: ANSWER IN T-DISTRIBUTION. A group of mathematics teachers wants to estimate the average…

A: Solution

Q: 5.7790 5.5928 5.6486 5.6661 5.5491 5.7239 5.5591 5.5864 5.6872 15. Los Angeles Commute Time Listed…

A:

Q: You are told that the distribution of television weights is normal, with a mean, u of 12.6 kilograms…

A: Given,sample size(n)=8mean(μ)=12.6standard deviation(σ)=2.9

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

A:

Q: Claim: Fewer than 96​% of adults have a cell phone. In a reputable poll of 1040 adults, 86​% said…

A:

Q: .V. Co. has an average sale of ₱37 million per week from their products in all their outlets. An…

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Q: The mean replacement time for a random sample of 12 cd players is 8.6 years with a standard…

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Q: Number of pets owned Frequency Relative Frequency Cumulative Relative Frequency 0 22 0.3607…

A: Outlier: An outlier is a set of data that varies substantially from other observational data in…

Q: What is the formula for finding the z-score? The z-score of the mean is always z =

A:

Q: Craps: In the game of craps, a pair of dice are rolled, and people bet on the outcome. For example,…

A: Given, P(when there is a win) = 118 P(when there is a loss) = 1-118=1718 Profit when there is a  win…

Q: Q5. A simple random sample of 450 residents of Payatas is taken to estimate the proportion of people…

A: Given information We have given that; in a random sample of 450 residents of Payatas is taken to…

Q: (a) If a child younger than 18 is randomly selected, what is the probability that he or she has at…

A: Given: Probability of children have at least one food allergy=0.06 Probability that those having…

Q: A dataset shows the number of capital letters that a student can write in 15 seconds using the non-…

A: Given that

Q: The data below is 12 observations of Fall semester student credit hours (x) and Spring semester…

A: We have given that,  X :- 6, 11, 16, 12, 7, 10, 8, 15, 13, 9, 5, 14 Y:- 3, 15, 13, 16, 9, 7, 4, 18,…