Test the claim that the proportion of people who own cats is significantly different than 20% at the 0.2 significance level. Based on a sample of 400 people, 12% owned cats The p-value is:  (to 2 decimals)

Q: a) Let A be the event that the two numbers we roll are the same. Find P (A). (b) Let B be the event…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: 3. Travelers who have no intention of showing up often fail to cancel their hotel reservations in a…

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

Q: Compute the margin of error for each of the following case. Assumes that the population is…

A: Givensample size(n)=25sample standard deviation(s)=4.5confidence level=95%

Q: # of Siblings Frequency Relative Frequency Cumulative Frequency 0 1 40 0.1714 36 2 39 3 52 4 43 a.…

A: It is given that the data in cross tabulation form. The total number of people or frequency is 210.

Q: A box contains a total of 9 tickets. One ticket has 10 written on it, four tickets have -1 written…

A:

Q: What is the verbal SAT score such that only 16% of admitted students had a higher score?

A: It is given that  Mean, μ = 660 Standard deviation, σ = 40 Z-Score, Z = ( X - μ )/σ

Q: You wish to test the following claim (HaHa) at a significance level of α=0.05α=0.05.…

A: Hypothesis test are used to measure the significance between the sample and population. There are…

Q: You take a sample of 50 police officers from large urban police departments in Maryland. The table…

A: Measure of central tendency are used to measure the location and average of the data set. These…

Q: Which one of the following is not a valid number for a probability? Oa. 0.32 O b. 17% O c. 0 Od. 1.5

A:

Q: For the given data set, find the: a) mean b) median c) mode

A: Given information: 27,57,34,62,27,54,27,41,43,41. a) Mean: Mean=sum of valuesNumber of values…

Q: You wish to test the following claim (HaHa) at a significance level of α=0.01α=0.01.…

A: Given,sample size(n)=227sample mean(M)=78.2sample standard…

Q: A dataset has a mean of 48.1 and a standard deviation of 6.3. What is the z-score of the value 18.5,…

A: Solution  Given That, A dataset has a mean of 48.1 and a standard deviation of 6.3. What is the…

Q: If 11 seeds are planted, what is the probability that exactly 4 don't grow?

A:

Q: The critical values separate the rejection region from the non-rejection region True False

A: Critical value:  Critical values are compared with test statistic to make decision about the null…

Q: A personnel director in a particular state claims that the mean annual income is greater in one of…

A: Given:A personnel director in a particular state claims that the mean annual income is greater in…

Q: ܀ 4 ◆ V ** ◆ ܀ ܀ ܀ ܀ ܕ ܀ ♦ * gje ♦ .. gjo ♦♦ As shown above, a classic deck of cards is made up of…

A: Total number of cards = 52 The probability that 9 of clubs is selected is = 1/52 = 0.019

Q: Solution Growing linearly, the balance owed on your credit card triples from $600 to $1800 in 12…

A: The provided information is The balanced owed on your  credit card from $600 to $1800 in 12…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 67…

A: Given data: Mean = 67 Standard deviation  = 15

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a) Draw a…

A: The provided information is  µ=100 σ=15 a. The detailed sketch is

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 78…

A: Note: According to our guidelines we can answer only three subparts and rest can be repost.

Q: a. To compute the confidence interval use a ? distribution. b. With 90% confidence the population…

A: It is given that  Mean = 3.4 Sample standard deviation = 1.8 Sample size = 242

Q: At what percentile is the child's reading level (round final answer to one decimal place). b.…

A:

Q: let X denote a random variable that has a Poisson distribution with mean y = 3 find p(x≥4/x≥2)

A:

Q: Tech is playing State in the last conference game of the season. Tech is trailing State 21 to 14…

A: Given:  Payoff of $9.2 million. payoff of $1.5 million. Two points of there is a 30% chance it will…

Q: A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4607…

A: The answer is attached below,

Q: You currently work for the DARPA, the Defense Advanced Research Projects Agency. You've received…

A: The given joint probability distribution function (pdf) for U and S is: U S Share of population…

Q: The following data give the prices (in thousands of dollars) of seven houses selected from all…

A:

Q: The average THC content of marijuana sold on the street is 10.2%. Suppose the THC content is…

A: It is given that  Mean, μ = 10.2% Standard deviation, σ = 1% Z-Score, Z = ( X - μ )/σ   Note:…

Q: An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over…

A: A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Q: 3. Travelers who have no intention of showing up often fail to cancel their hotel reservations in a…

A: The following data has been given: 18,16,16,16,14,18,16,18,14,19 The sample size is n=10.

Q: actually 0.25 (we normally wouldn’t know this, but suppose hypothetically someone was able to know…

A: The total number of exposed and non-exposed  in the source population   Cases Controls Exposed…

Q: 1 d) 50 percentile is the same as the mean. True False

A: 50th percentile is the same as the mean Select true or false ?

Q: Given the standard normal distribution, find ZZ such that P(z<Z)=0.988P(z<Z)=0.988

A: Given the standard normal distribution of P(z&lt;Z)=0.988

Q: 2. For the following information on a data set: Measurement Class .00- .75 .75-1.50 1.50-2.25…

A:

Q: nts - Online ccess The mean cholesterol levels of women age 45-59 in Ghana, Nigeria, and Seychelles…

A: Given: μ = 5.1 σ = 1 n = 24 Formula Used: Z-score = X-μσn

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: The standard score measure the deviation of each observation from the mean. It is calculated by the…

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: From the provided information, Mean (µ) = 1.1 Standard deviation (σ) = 5.6

Q: Suppose we are interested in the average reading achievement test score of all the currently…

A: The objective is to correctly define the term "the average test score of Zaphod the Destroyer's…

Q: The exercise presents numerical information. Describe the population whose properties are analyzed…

A: The exercise presents numerical information. Describe the population whose properties are analyzed…

Q: As part of your retirement planning, you purchase an annuity that pays 3.5% annual interest…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Given data: Mean = 122000 Standard deviation  =41000 Sample size = 97

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)…

A: We have given that,  Sample mean x̄ = 29.4, sample standard deviation (s) = 7.5 and sample size (n)…

Q: I don't see the -0.6725 on the s chart?

A: With respect the previous question given Mean μ=100Standard deviation σ=15 The IQ score has to be…

Q: Explain with the aid of examples, the meaning of the following in context of research design: a.…

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

Q: A researcher wants to study the academic performance of urban secondary schools in his county. He…

A: The question is about grouped frequency dist. Given :

Q: Let X represent the number of games (out of 840) that you win. Find the standard deviation for the…

A: It is given that  Population Proportion, p = 0.48 Sample size, n = 840 Mean, μ = np = 403.2

Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…

A: Given,mean(μ)=55.8standard deviation(σ)=9

Q: Is our study OR biased towards or away from the null?   A)Away from the null.

A: Given:- odd ratio of a case control study that completes and yields a study =4.5 actually true OR…

Q: Question 1 (a) Manufactured articles are packed in boxes each containing 200 articles, and on…

A: Given that: n = 200 p = 0.015 Box containing 4 or more defective items is said to be substandard.

Q: Assume that when adults with smartphones are randomly selected, 43% use them in meetings or classes.…

A: Given datan=5p=43%