The following is the scores of an exam: 40 50 50 52 58 58 62 65 68 72 79 80 80 87 90 96 98 Calculate the mean and round it to two decimal points. O a. 67.63 O b. 65.73 O c. 66.73 O d. None of the choices is correct Oe. 69.71

Q: The list below shows the ages (in years) of 7 people riding in a van to a math competition.…

A: From the provided information,The data values are as follow:ages 15 12 9 15 14 40 46Sample size (n)…

Q: scores of 40 students are listed below. Find P85.   30 35 43 44 47 48 54 55 56 57     59 62 63 65 66…

A: Given that  Arranging Observations in the ascending order, We get…

Q: 71 67 67 72 76 72 73 68 72 72

A: Data:-71 67 67 72 76 72 73 68 72 72Sample size n =10

Q: A football coach randomly selected ten players and timed how long each player took to perform a…

A: Given,Ten players with their respective times in minutes are 15 10 10 15 13 10 13 12 8 8.(a) The…

Q: HISTOGRAM: 3. The following is the IQ scores for 40 randomly chosen fifth graders in 2012. 108 113…

A: Solution: The IQ scores for 40 randomly chosen fifth graders in 2012 are given.  Part A Since the IQ…

Q: The table below consists of 18 numbers. Find the percentile of the value 52. (Note: Percentiles are…

A: Given data, 46,36,37,52,28,49,23,58,64,62,31,19,55,63,59,43,38,45   52 represents __ percentile.

Q: Jaden’s current grades in Statistics are the following.  Is it possible for Jayden to earn an A…

A:

Q: A dentist is researching time spent teeth brushing.  A sample of 13 brushing times is collected and…

A: Mean: The mean is the sum of observations divided by the number of observations. that is,Mean = x =…

Q: On the right are the numbers of customers served by a restaurant on 40 consecutive days. (The…

A: The 3rd decile means 30th percentile value.the 30th percentile value is 40

Q: Jessica counts how many customers have come into her restaurant for the past 30 days.  The table…

A: frequency distribution

Q: Three students were applying to the same graduate school. They came from schools with different…

A: We have given that three students were applying to the same graduate school. They came from schools…

Q: The scores and their percent of the final grade for a statistics student are given. What is the…

A:

Q: 3

A:

Q: The data below is the number of hours that people work per week at your job.  Construct the…

A:

Q: . What is the mean? Round your answer to the nearest tenth. _________________________ B. What is…

A: given data : 15,21,25,16,21,14,13,-1,6,-2,-6,15,16,21,22

Q: evelop a point estimate of the proportion of teens aged 13 to 17 who say social media makes them…

A: Sample size n=743

Q: The following set of data is given. 33 95 43 33 93 84 87 (a) Find the mean . Round your answer to…

A:

Q: Calculate the quartiles. 190 229 74 377 300 481 255 428 328 270 109 109

A: Three quartiles:The first quartile separates the lowest 25% of the observations from the other 75%…

Q: HISTOGRAM: 3. The following is the IQ scores for 40 randomly chosen fifth graders in 2012. 108 113…

A: Solution: The IQ scores for 40 randomly chosen fifth graders in 2012 are given.  Part A Since the IQ…

Q: Using the given data, find the following. , 10.8, 16.9, 15.8, 8.4, 4.1, 8.9, 13.6, 5.4, 4.5, 7.6,…

A: Given the data 4.1 4.5 5.4 6.2 7.6 8.4 8.9 10.8 11.9 13.6 15.8 16.9 19.3

Q: It was hypothesized that there will be a difference in the average test score in Chemistry class…

A: Denote μ1, μ2 as the true average test scores in Chemistry class between high schoolers who watched…

Q: Use the following table: Value 14 18 3 12 Frequency 3 3 19 3 Find the weighted mean. Note: Round…

A: Given: Value X Frequency W 14 3 18 3 3 19 12 3 Formula Used: Weighted mean = ∑WiXi∑Wi

Q: The list below shows the ages (in years) of 8 people riding in a van to a math competition.…

A: We have given that The data and the data are  15,14,12,15,12,9,40,43 Number of observation=8

Q: n below to find the mean, µ. Ro

A: Here use standardized score (z score ) formula to find value of mean

Q: he scores on a test for a sample of 38 statistics students are summarized in the following table.…

A: students score(x) no. of students(f) fx 90 9 810 80 16 1280 70 13 910   n = 38 ∑fx = 3000…

Q: Find the mean

A: Consider the preliminary calculations given below:Daily low temperaturefrequency (f)Mid value (m)…

Q: The student's weighted mean score is (Simplify your answer. Round to two decimal places as needed.)

A:

Q: Checkout times. The checkout times (in minutes) for 12 randomly selected customers at a large…

A: Solution-: We find, (a) The mean of the checkout times ...min (b) The standard deviation of the…

Q: The manager at a hospital claims the median number of patients seen is 80 per day. A sample of 20…

A: Claim: The median number of patients seen is 80 per day.Sample size Significance level

Q: The list below shows the ages (in years) of 10 people riding in a van to a math competition.…

A:

Q: Frequency 24 20 16 N Co 8 4 0 70.5 15 75.5 Prealgebra Exam Scores 16 80.5 14 85.5 Scores 11 90.5 4…

A:

Q: Percentile of 53=___________. ( round to the nearest integer as needed)

A: Our aim is to find the percentile corresponding to the 53

Q: The data below shows the number of credits completed by certain students at a local college. Credits…

A:

Q: Find the mean for the recorded exam scores (in points) from a statistics exam. Round the answer to…

A: Given that data  32 18 4 57 64 7 86 52 22 70 65 83 47 55 29 Mean = sum of all observations/total…

Q: The scores and their percents of the final grade for a statistics student are given. An error…

A: The scores and their percents of final grades for a statistics student are given.

Q: Find the indicated measure. The test scores of 21 students are listed below. Find Q3.  56 57 59 63…

A: Solution: To find the quartiles first we arrange the observations in increasing order of their…

Q: Find the third quartile for this list of numbers BY HAND 15 99 27 64 29 39 16 68 6 40 75 9 35 3 95

A: The given data set is, 15 27 29 16 6 75 35 95 99 64 39 68 40 9 3 Arrange the observations in…