A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population 5000. The 144 people are asked to sample the caterer`s food.  Will the distribution of pˆ,the sample proporti

Q: A random sample of 50 lumbar supports used by go-cart racers were subjected to a crash test, and…

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Q: Let Y denote the average age of the two children that are selected. What are all the different…

A: couple has 6 children. Jo, Co, are both 10 years old (they were twins), Joey is 8 years old, and…

Q: Nationally, the proportion of red cars on the road is 0.12. A statistically-minded fan of the…

A: The following hypothesis can be formed

Q: A dietician read in a survey that 85.36% of adults in the U.S. do not eat breakfast at least 3 days…

A:

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01significance​ level,…

A: Here it is needed to test, whether the proportions of​ agree/disagree responses are the same for…

Q: A sample from a normal population with µ = 50 and  σ = 6 has a mean of M = 48.20. If the sample mean…

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Q: A student wondered what proportion of a large jar of thousands of marbles were red and speculated…

A: From the provided information, The population proportion (p) = 0.30 Sample size (n) = 50, out of…

Q: Using z scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 50…

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Q: Use the figure to the​ right, which shows the percentages of adults from several countries who favor…

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Q: A medical researcher says that less than 82% of adults in a certain country think that healthy…

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Q: A researcher claims that the incidence of a certain type of cancer is less than 5%. To test his…

A: In this context, a researcher claimed that the proportion of incidence of particular type of cancer…

Q: If random samples, each with n = 25 scores, are selected from a normal population with p = 80 and a…

A: Given information Mean µ = 80 Standard deviation σ = 20

Q: A sample of n = 100 scores is selected from a population with u = 50 and o = 5. If the sample mean…

A: Given Sample Mean: x̄ = 49 Sample Size: n = 100 Population Mean: μ = 50 Population Std Dev: σ =  5…

Q: A survey of 2690 musicians showed that 361 of them are left-handed. Find a point estimate for p, the…

A: Given: Number of musicians (n)=2690 Number of musicians that are left-handed (x)=361

Q: The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be…

A:

Q: Suppose that a poll taken 10 years ago found that 55% of parents spank their children. Suppose a…

A: We have, p=0.55= proportion of parent spank their children n= 150= sample size x=65= the number of…

Q: The distribution of the sample mean, x, will be normally distributed if the sample is obtained from…

A:

Q: With a percentile of 68 on a test of ambience given to mindanao resorts, bung gumni resorts score of…

A: Given, With a percentile of 68 on a test of ambience given to Mindanao resorts, bung gummi resorts…

Q: In a random sample of 1000 persons from U.P. 510 were found to be consumers of cigarettes. In…

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Q: A real estate agent working in a large city believes that, for three-bedroom houses, the selling…

A: From the given information,       β1( slope)=-2.158,S.E( β1) =0.149n=20α=0.05

Q: A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3. If these scores are placed…

A: Given: Lowest value of X = 3 Highest value of X = 11

Q: n the cancer institute of Philippine General Hospital, there were 529 patients who undergo…

A:

Q: Using z-scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 50…

A: Given

Q: construct a 95% C.I. for the actual; percentage of shoppers who live more than 15 miles from that…

A: The sample size is n = 200 Proportion of shoppers who live more than 15 miles from that center in…

Q: A cell phone manufacturing company claims that their phone batteries last up to 48 hours without a…

A: Solution

Q: Strack, martin and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…

A: The objective of this test is to find whether the cartoons are rated significantly funnier when the…

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A: The sample proportion is, The null hypothesis is, The alternative hypothesis is, Significance…

Q: A medical researcher says that less than 88% of adults in a certain country think that healthy…

A: (a) Claim:B. Less than 88% of adults in the country think that healthy children should be required…

Q: A real estate agent working in a large city believes that, for three-bedroom houses, the selling…

A: Given: n = 20 Slope = -2.158 Standard error for the slope  of regression line = 0.149 Significance…

Q: Recent surveys have shown a decline in the percentage of U.S. households with cable TV. In one city,…

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Q: A Survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

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Q: Suppose that a poll taken 10 years ago found that 57% of parents spank their children. Suppose a…

A: A binomial distribution can be approximated as normal distribution if the value of n·p and n·p1-p is…

Q: normal distribution has a mean of µ = 90 with σ = 8. If one score is randomly selected from this…

A:

Q: A university dean is interested in determining the proportion of students who receive some financial…

A: Given :-   randomly selects 200 students and finds that 118 of them are receiving financial aid…

Q: A medical researcher says that less than 82% of adults in a certain country think that healthy…

A: claim in the above statement is the medical researcher that less than 82% of adults in certain…

Q: A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students…

A: From the given information, the claim of the problem is fewer than 20% of Evergreen Valley College…

Q: Using z scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 55…

A: Given : Original population  Mean=37 Standard deviation =6   After standardization  Mean=55 Standard…

Q: Is it appropriate to use the normal approximation to find the probability that less than 32% of the…

A: Let p be the proportion of freshmen planning to major in STEM discipline. Given that p = 27% = 0.27…

Q: In a random sample of 1022 U.S. adults, 480 think that the U.S. government is doing too little to…

A: Hypotheses:   Here p1 and p2 be the two proportions. The aim is to check whether p1= p2. The null…

Q: A survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

A: Consider that p1 is the true proportion of newlyweds of Ethnicity A who have a spouse of a different…

Q: On an exam with μ =75, you obtain a score of  X = 80. a. would you prefer the exam distribution…

A: a) Given μ =75, X = 80. Consider, the z score with σ = 5: z=X-μσ=80-755=1 Consider, the z score with…

Q: The average sales in a  company  = 225 St devaitin = 40  Using z scores, any sale over what…

A: mean = 225 sigma = 40

Q: In a random sample of 1022 Canadian adults, 480 think that the Canadian government is doing too…

A:

Q: A research center claims that 26% of adults in a certain country would travel into space on a…

A:

Q: old is p2, what is the null hypothesis for a test to determine if the proportion of the population…

A: A null hypothesis is a statement about an unknown parameter that is framed either from existing…

Q: Among college students, the proportion p who say they’re interested in their congressional…

A:

Q: At a local university, English instructors are supposed to grade essays in a class so that the…

A: Note: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: An experiment was designed to compare the lengths of time that four different drugs provided pain…

A: Test hypotheses: There are 4 types of old drugs. Denote the true average time of each of the 4 drugs…

Q: A city official claims that the proportion of all commuters who are in favor of an expandedpublic…

A: A city official claims that the proportion of all commuters who are in favor of an expanded public…