a national caterer determined that 87% of the people who sampled food said it was good. A random sample of 144 people is obtained from a population of 5000. The 144 people are asked to sample the food. if ^p is the sample proportion saying that the food is good, what is the mean of the sampling distribution of ^p? A. 0.87 B. 1.25 C. 0.19 D. 0.03

Q: A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight…

A: Formula :

Q: The U.S. Census Bureau computed the proportion of U.S. residents who lived in each of the four…

A: Solution: Given information: k= 4  Categories  n= 80+129+209+118 = 536  total observation   α=0.05…

Q: A pharmaceutical company wants to test the effectiveness of a new drug for a particular infectious…

A: Solution : Given : n1 = 24             n2 = 16             x¯1  = 6.5            x¯2  = 7.125…

Q: Suppose that 42% of students of a high school play video games at least once a month. The computer…

A: Solution: Given information: N= 792  Population  size  n= 30 Sample size  p^=0.40 Sample proportion…

Q: By design, each portion of the SAT has a mean of 400 with a standard deviation of 200 across the…

A: From the given information, it is observed that the test is right tailed.

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: A) The hypothesized mean is 8.16.

Q: The average height of women in the freshman clas at UA has historically been 5'4" with a standard…

A: Consider a random variable X, that defines the height of women in the freshman class at the UA.

Q: For a particular jelly bean manufacturing company it is known that 50% of all jelly beans produced…

A: We have to find out the mean of the sampling distribution of the sample proportion...

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.5…

A: Given Information: The height of women ages​ 20-29 is normally​ distributed, with a mean of μ=63.6…

Q: Suppose multiple samples of size n  are drawn from a population with a probability of success equal…

A: Defined : probability of success equal to 57% p=0.57

Q: The pulse rates in bpm of a random sample of ten male 200 Level Nursing students of ABU Zaria are…

A: The test hypothesis are, H0: μ = 72 H1: μ ≠ 72. This is two-tailed test. We reject the null…

Q: A national company with several locations in the DFW area wants to provide on-site childcare for…

A: Given:- 107,92,97,95,105,101,91,99,95,104 sample size (n)=10   Formula:- mean x=∑x¯Px σx=∑x2Px-μx2

Q: There are 74 players who play a chess game against the Computer. Each player plays 12 times and the…

A: From the given information we find the solution.

Q: Out of a random sample they found that 9.72% of the parts lengths was more than 7.4 inches and 7.78%…

A: Let X be the random variable such that the length of the part. It is known that the length of the…

Q: Fasteners are manufactured for an application involving aircraft. Each fastener is categorized…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The Office of Financial Aid at the University of Michigan currently quotes the cost of textbooks for…

A: a) The population includes all the members of the defined group that we are studying. Here, the…

Q: According to a study conducted three years ago by the Organisation for Economic Cooperation and…

A:

Q: The most recent data from SKYCTC shows that 76% of MAT150 students pass with a C or higher (using…

A: (a)The sampling distribution of sample proportion is N~(µp^,σp^)The mean and standard deviation is,

Q: A large warehouse is filled with 5,238 tungsten light bulbs. An electronics engineer wants to…

A: Here sample statistics is sample mean So statistic of interest is sample mean lifespan of 18 bulbs

Q: For each day of last year, the number of vehicles passing through a certain intersection was…

A: The engineers are recording the number of vehicles passing through a certain intersection to…

Q: A population of values has an unknown distribution with µ = 124.2 and o Fandom sample of size n =…

A: Given data,μ=124.2σ=58.3n=106

Q: The owners of a manufacturing company conducted a survey to determine the mean income of the…

A: We have to find correct answer.

Q: A researcher wants to calculate the prevalence of Alzheimer’s among members of a specific community…

A: Option 1 A) n=3794 Explanation:

Q: Suppose an instructor wants to know the average height, gender distribution, academic performance…

A: d) average height: ratio scale Gender: nominal scale Academic performance: ordinal scale  Year of…

Q: Before the furniture store began its ad campaign, it averaged 235 customers per day. The manager is…

A:

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.8 inches. Assume σ=2.7…

A: Given Data Population Mean,μ = 64.8 Population Standard Deviation,σ = 2.7

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of…

A:

Q: The manager of a certain bank has recorded the amount of time, recorded to the nearest tenth of a…

A: Mean: Branch 1 Mean=sum of observationsNumber of observations         =1.3+2.5+4.5+....+27.9+28.320…

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, µ, of…

A: Solution

Q: Suppose an instructor wants to know the average height, gender distribution, academic performance…

A: Given that an instructor wants to know the average height, gender distribution, academic performance…

Q: An investor wants to know if the average value of property is different from PKR 85000/=. He made…

A: Given data: Claim: An investor wants to know if the average value of property is different from PKR…

Q: A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight…

A:

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.6…

A:

Q: Two popular brands of tires for tractor-trailers are the Puma and the Eternal. Christine is a buyer…

A: Solution

Q: The governor of Florida would like to estimate the mean age of all Florida residents. To do so, he…

A: The population is the set of all subjects of interest.

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A:

Q: In order to estimate the length of wolves in a forest, 12 wolves are selected to be studied by some…

A: Given: Number of wolves (n) = 12 The length of wolves are 6.1, 4.94, 5.89, 5.3, 4.81, 5.73, 5.35,…

Q: A researcher wish to test the claim that the average cost of tuition and fees at a four year public…

A: Null hypothesis: H0 : μ = 5700 Alternative hypothesis: H1 : μ >5700 Obtain the test statistic…

Q: A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight…

A: Standard Deviation = σ = 0.4 Margin of Error = E = 0.07 Confidence Level = 90 Significance…

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of…

A: Given that

Q: A survey was conducted among the employees of a certain company and they were asked about their…

A: Given data(x),(no. of observation (n)=20) 120, 85, 94, 67, 112, 88, 92, 110, 125, 70, 83, 90, 84,…

Q: Find the mean of the sampling distribution of p̂.

A: The population proportion is 0.16, and sample size is 400 patients.

Q: A random sample of 60 students in the business statistics course answered a survey on the average…

A: Given observation Class Hrs N Mid - Value x Nx 1 0 – 3 18 1.5 27 2 4 –…

Q: A pharmaceutical company wants to test the effectiveness of a new drug for a particular infectious…

A: Sample size of people receiving new drug = n1 = 24.  Sample size of people receiving placebo = n2 =…

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.9 inches. Assume σ=2.4…

A:

Q: The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. A…

A:

Q: t a large university, 68% of the students have a laptop, while only 43% of professors have one. Let…

A: A two proportion  z-test allows you to compare two proportions to see if they are the same. The null…

Q: Online customer service is a key element to successful online retailing. According to a marketing…

A: Let Xi be the random variable defined as Xi=1, if ith online customer take advantage0,…

Q: There is interest in learning about the number of internet connected devices that people own. You…

A: Survey for the internet connected devices

Q: The latest available data showed health expenditures were $10,739 per person in the United States,…

A: (a). Sketch the sampling distribution of sample mean: A random sample of n = 100 people is selected.…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.