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: What is the probability that a first grade classroom of 20 students who are chosen randomly from the…

A: Given Information: Mean μ=100 Standard deviation σ=15 Sample size n=20

Q: Suppose that the mean score of a class of 29 students was 78. The 16 male students in the class had…

A: From the provided information, The mean score of 29 students was 78. The 16 male students has mean…

Q: A study found the lengths of daily driving time for people in your district are Normally distributed…

A: The mean is 35 minutes and the standard deviation is 3.

Q: The mean marks scored by 6 students in a database exam is 54.4. If a student who got 66 is also…

A: Given: old mean=54.4old n=6 An additional item 66 is added. The new mean is calculated as below: new…

Q: The mean monthly salary of 32 men is P28,500 while that of 38 women is P24,400. Find the mean salary…

A:

Q: The mean of Salary of 500 employees per day was found to be 150. But later on, it was found that the…

A:

Q: Suppose that the mean score of a class of 33 students was 80. The 17 male students in the class had…

A:

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: 1) The researcher is testing whether mean is different from 136. Hence, the null hypothesis and…

Q: Anna is 3 years old and in the 42nd percentile for height in her age group. What does this mean?…

A: Given: 1)Anna is 3 years old and, 2) In the 42nd percentile for height in her age group. In the…

Q: A teacher found that the mean number of hours her 12 students spent studying for an AP Statistics…

A: old mean for 12 students = 6.7 sum of 12 students = 6.7*12 = 80.4

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35…

A:

Q: To begin to better understand personal experiences of headache pain, a drug manufacturer has asked 9…

A: We have given that23,14,49,59,44,36,28,17,49

Q: In each game of the season a basketball player scored the following:…

A: Solution:Mean ˉx=∑x/n  =(8+19+15+7+8+12+19+16+20+13+10+11)/12  =158/12  =13.1667 Median…

Q: Compute the mean of 45, 23, 78, 27, 19, 12, 62.

A: Given : X = 45, 23, 78, 27, 19, 12, 62 n = 7 We want to find mean.

Q: There were 5 members of a basketball team, who had a mean score of 12 points each per game. One of…

A: Given n=5, Xbar=12, n=4, Xbarreduced=10

Q: A professor has recorded exam grades for 40 students in his​ class, but one of the grades is no…

A: From the provided information, Number of students = 40 The score on the exam was 82. The mean of the…

Q: Would it be unusual for the sample mean to be less than 2 ?

A: Would it be unusual for the sample mean to be less than 2 ?

Q: Suppose there are 30 students in a class. the18 male students in the class have a mean score of 72,…

A:

Q: What is a frequency distribution? Explain how these differ if we are using qualitative data versus…

A: Frequency distribution- Frequency distributions are visual displays that organise and present…

Q: If a set of exam scores forms a symmetrical distribution, what can you conclude about the students’…

A: The set of exam scores forms a symmetrical distribution.

Q: Two samples from two different populations are given: (а) Sample 1: 19.8, 12.5, 13.2, 16.9, 18.3,…

A: Let σ12 be the variance of population 1 and σ22 be the variance of population 2. Hypothesis: Null…

Q: Twelve professional gamers were asked their age (in years) when they first began playing their game…

A: Formula for sample mean is as follows,   x¯ = Sum of all observations Total number of observations

Q: The first quartile of the data values 45, 48, 31, 48, 50, 30  equals ?

A: Arranging the data into ascending order: 30, 31, 45, 48, 48, 50

Q: in a frequency distribution the coefficient of skewed ness based on quartiles is 0.6. it the sum of…

A:

Q: The sample mean or sample proportion is unbiased estimator to the population proportion in case of…

A: The sample mean or sample proportion is unbiased estimator to the population proportion in case of…

Q: A researcher collected data on the palate length of 50 individual shrews of the same species.. She…

A: In this question, a researcher has collected data on the palate length of 50 individual shrews of…

Q: Assuming the regression line: P = 0.8 - 0.2X Then, at the value of X=4 that the linear regression…

A: Ycap=0.8-0.2*X  We want to find the intercept on X axis. Note: According to Bartleby Expert…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: Given information Hypothesized mean µ = 132 mm hg Mean x̅ = 138 mm hg Standard deviation (s) = 18 mm…

Q: What are the null hypothesis (H) and the alternative hypothesis (H,) that should be used for the…

A: Given Population Mean, μ=136 Sample Mean, x=130 Sample sd, s=15

Q: On a survey, 7 students reported how many minutes it takes them to travel to school. Here are their…

A:

Q: How do I find a sample with data values of 27, 25, 20, 15, 30, 33, 28, and 25. Compute the 20th,…

A:

Q: A researcher believes there is a difference in the mean number of days before visible results begin…

A: let's set up the null hypothesis and alternative hypothesis null hypothesis: there is no difference…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

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.