Solve the problem. Round the point estimate to the nearest thousandth. 6) Find the point estimate of the proportion of people who wear hearing aids if, in a random sample of 304 people, 20 people had hearing aids.

Q: In what percent of their games would you expect the Dodgers to score more than 7.31 runs?

A: Given: Distribution of games is symmetric, unimodal and bell-shaped.

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let A be the event that student had Math SAT of 700 or more Therefore, PA=0.36 find The probability…

Q: The mean of a sample is 40. What will the mean become if a) 9 points are added to each score? b) 18…

A:

Q: A box truck rental service offers trucks in multiple sizes for people who are moving. If a 10-foot…

A: Given:           10−foot truck can carry 45 boxes.26−foot truck can carry 160 boxes.

Q: Of 60 patients treated with a certain medication, 24 showed no improvement. What percent of patients…

A: Total patient=60 Patient who showed no improvement=24 To calculate: what percent of patients…

Q: d. Is the pointer on Spinner 2 more likely to land on section A than on B or C? Explain. e. Which…

A: Given three spinners with A , B and C portions among each of them.

Q: 3. What was the median walking time in June 2021? Express your answer to the nearest hundredth.

A:

Q: ) What is the point estimate for the percent who want to change the town’s name? (b) What is the…

A: We can solve the problem as follows

Q: The Information Resources Institute reports that one out of every five people who Section 7-5| buys…

A: 21. Given that, one out of every five people who buys ice cream buys vanilla ice cream. The ratio…

Q: Could you explain how to find the last question which talks about proportion?

A: First understand proportion Proportion means ( how many parts from total) Example : One apple is cut…

Q: Suppose r is .84, compute proportion of variation is explained?

A: From the given information, it is observed that r=0.84.

Q: Based on the data, what is the most reasonable estimate for the number of The Foodies members whose…

A: In the bar graph: Total no. Of member select = 6+5+14+8+2= 35 No. Of people who prefer Italian = 14…

Q: Out of 300 people sampled, 153 said they prefer Coke over Pepsi. What is the point estimate for the…

A: Consider that p is population proportion of ALL people that prefer Coke over Pepsi.

Q: A company has the pay scales below, with the percent of employees receiving that pay listed. Find…

A: Let n be the number of employees.

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A: Given ,population proportion (P) =0.152sample size (n)=594No.of report experiencing migraines(X)=71

Q: 7.) How much does the Over the Rainbow Bakery sell 18 cupcakes for? 8.) What is the proportion of…

A: Ingredients For 4 dozen for 225 cupcakes cake ingredients     Shifted flour 6…

Q: Provide an appropriate response. When 390 junior college students were surveyed,115 said that they…

A: It was given that 115 out of 390 junior college students have previously owned a motorcycle.

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Sample Size: The formula for the sample size is as follows: Here, zα/2 is the critical value at 99%…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A:

Q: In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain…

A:

Q: 4. A farmer estimated that there were 25 gallons of water left in a tank. If this is an…

A:

Q: What percent of the schools have an acceptance rate below 15%? O a) 1% O b) 4% 12% O d) 16%

A: The number of values corresponding to a class or observation is defined as the frequency of that…

Q: Among the 2302 respondents, 56 said they have more than five tattoos. What percentage of respondents…

A:

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: What proportion of Canadians spend between 8 and 16 hours watching Netflix per month? What…

A: Solution

Q: Explain the sample mean of the difference scores varies.

A:

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: Given: Median = $66,650, 90th percentile = $178,500.

Q: 2) The mean weight of 32 math students is 98.3 lbs. If the students could all stand on the scale…

A: Solution 2 Xbar=98.3, n=32, total weight=∑i=1nXi=?

Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Critical value: Here, α = 0.01. Using excel formula “=NORM.S.INV(1-(0.01/2))”, the critical value is…

Q: (a) Find a point estimate for the proportion of cell phone owners aged 18-24 who have an Androld…

A: It is given that Sample size n = 245 Number of cell phone owners with Android phone, X = 106

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: In a survey, the median household income in a country was found to be £27000, and the mean household…

A: Given: Mean=53000Median=27000

Q: 1(a). What is the point estimate for the proportion of people who liked the chocolate bar?

A: here use given data

Q: A survey of 1179 adults nationwide  asked what irks you most about The actions of other Motorist"The…

A: Given: Number of People surveyed=1179 People voted for tailgater=796 To find: Percentage(x).

Q: a researcher wants to find the proportion.  what size sample should be obtained in order to be 90%…

A: We have given that,  Confidence interval = 90% and Margin of error (E) = 3% = 0.03 Then,  We will…

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: hat is the formula and how to draw the sample if only given with the total population and margin of…

A: From the given information, Section No of students B SMD 1Y1-1 66 B SMD 1Y1-2 52 B SMD…

Q: if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

A:

Q: Round the point estimate to the nearest thousandth Find the point estimate of the proportion of…

A: Given data, n=898 x=46 Point estimate(p)=?

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: Given the 1st and 3rd quartiles of a data are 24 and 48, respectively, what value would be…

A:

Q: You are interested in conducting a study to determine the proportion of Thunder Bay high school…

A:

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: All the given data is shown in the tree diagram

Q: What does the margin of error for the estimate of a population proportion tell you?

A: The formula for margin of error can be written as:

Q: In fall 2014, 38% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: LetA - Percent math S A T score of less than 700 or more in all applicants.B – Percent math SAT…

Q: (a) What proportion of combined GRE scores can be expected to be over 163.4? (b) What proportion of…

A: mean = 150 s = 8.8

Q: (g) What is the cutoff number of days for a pregnancy for the bottom 20% of women?

A:

Q: Practice questions for a textbook are marked with difficulty levels of easy , intermediate , and…

A:

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.