a. Find p​, the point estimate of p.

Q: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A:

Q: You take a sample of the heights (in inches) of 12 professional basketball players. The data are:…

A: Given data: 79, 76, 77, 79, 81, 83, 79, 76, 78, 83, 87, 85.

Q: How many people took part in this survey? * The table shows data about what type of phones that…

A: To arrange the data of two categorical variables, two ways contingency table is used. The first row…

Q: A recent survey of 537 California college students found that 481 had taken an online class in the…

A:

Q: newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey of…

A: Given: It is assumed that the sample is the representative of population. Thus, Sample…

Q: Determine whether or not this statement makes sense. Nielsen  Media  Research  determined  the…

A: Given statement is: Nielsen  Media  Research  determined  the precise  proportion  of  all Americans…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: A survey of 2390 musicians showed that 398 of them are left-handed. Find a point estimate for p, the…

A: We have find population left handed..

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: Sample Proportion The sample proportion describes the proportion of people during a sample with a…

Q: What sampling distribution will you use? O Student's t chi-square O binomial O uniform O normal What…

A: Given: Chi square test statistic = 9.974 Degrees of freedom = 4 Significance level = 0.05

Q: According to the results of a survey,  32%  of  102  people indicated that American football is…

A: Consider the level of significance as 0.05. Computation of critical value:…

Q: A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey…

A: The random variable social media profile follows binomial distribution. The sample size is 1850. The…

Q: Please answer the questions in the photo and explain. Thank you

A: (a) Sample Mean = (2.2 +0.5 +2.4 +2.7 +2 +1.5 +0.2 +1.5 +0.1 +0.2)/10 = 1.33 (b) Here, we're…

Q: How is the frequency of the segmentation set?

A: Segmentation is an important part of statistics. The Heterogeneous data is divided into a…

Q: Suppose automobile insurance companies gave annual premiums for top-rated companies in several…

A: Given boxplot:

Q: A student would like to estimate the average number of text messages sent by cell-phone users in a…

A:

Q: The following boxplot illustrates the song length (in seconds) of the top 50 songs on Spotify in…

A: The median is the middlemost value of the dataset. So here Median corresponds to the one that lies…

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: From the given data we can conclude that, Proportion = 25% Margin of error = 1.3%

Q: 18. Use a z-table to determine the percentage of people that make less than $50,000. a S1.83% b.…

A: Given Information: Population mean (u) = $ 50,000 Target value (x) = $ 50,000  Standard Deviation…

Q: 25% of pitchers are left-handed. a survey of 80 pitchers showed 27 are left-handed. find the point…

A: Solution:Point estimate: The population parameter which is estimated by using sample statistic is…

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: Given: The proportion of people who like dark chocolate more than milk chocolate is 32% Margin of…

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A:

Q: Roman, a health data officer, was tasked to create a report describing the height of all the…

A: A histogram is used to show frequency distribution, probability distribution, cumulative frequency…

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: 4- A florist is interested in the proportion of her clients that prefer roses in their flower…

A: In statistics, a population is a set of similar items or events which is of interest for some…

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A:

Q: Find the best point estimate of the population proportion p

A: A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4273…

Q: Suppose that the results of a survey show that  24%  of people consider summer as their favorite…

A: Solution: From the given information, p=0.24 and E=0.02.

Q: A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 25, 3, 1, 22, and 9…

A: Total five classes, A, B, C, D, and F, with their frequencies are given.

Q: Consider any survey.  If you want to be specific, think about polling people if they prefer Coke or…

A:

Q: Find an article of your choice which uses proportions, and copy and paste the address of that…

A: The objective of the question is to understand the concept of sample proportions and how they are…

Q: 395 out of 500 women were in favor with the new brand of skin whitening. What is the point estimate…

A:

Q: a) Calculate the margin of error for the proportion of all U.S. adults who think things are on the…

A: It is given that  Proportion for wrong track, p = 75% = 0.75 Sample size, n = 1997 Confidence level…

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: Here the proportion of people liking dark chocolate is 37% with a margin of error 2.5%  So, the…

Q: The following gives the national percentages of adults in a given age group. Use Google Sheets or…

A: Given data ,  Age Group Percentage  18-29 17 30-44 27 45-59 25 60 or older  31

Q: A marketing company is interested in the proportion of people that will buy a particular product.…

A: We have to write the correct terms .