are approximately normally distributed, about how many applicants got scores a. above 78? b. above 66? c. between 70 and 80?

Q: If the mean of a symmetrical distribution is 130, which of these values could be the median of the…

A:

Q: The town of Butler, Nebraska, decided to give a teacher-competency exam and defined the passing…

A: Here we have to explain the given statement

Q: Use the sample statistics to test the claim that the mean score on a final exam is more than 83. x =…

A: STAT --> TESTS ---> T-test --> stats

Q: Out of 600 people sampled, 120 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the provided information, Sample size (n) = 600 120 said they prefer Coke over Pepsi that is x…

Q: FIND THE MEAN OF THE SET OF DATA BELOW AND CONSTRUCT A SAMPLING DISTRIBUTION BY SELECTING 3 SAMPLES…

A: Mean of the set of Data: Mean=Sum of the valuestotal=7+10+14+17+205=685=13.6

Q: The boxplot below shows the distribution of heights of 16 undergraduate statistics students. Using…

A: we have to interperete the boxplot

Q: For the data given, as the confidence leel increased from 95% to 99% did the margin of error…

A: We have given that a random sample of eye colours collected from a group of 40 MVCC students.

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: Assuming that the samples come from normal distribution ,find the margin E given the following:…

A: a.

Q: a. What is the frequency for CEO ages berween 54 and 65? b. What percentage of CEOS are 65 vears or…

A: Consider the table ,  Age Frequency Relative frequency Cumulative relative frequency 40-44 3…

Q: Calculate the coefficient of variation of a distribution with == 25, *f=21 254 and 2.1= 3804 O…

A:

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: (c) without assuming anything about the distribution of times, what can be said about the percentage…

A:

Q: Based on the frequency distribution above, find the relative frequency for the class 15-18. Relative…

A: Given: Ages Number of student 15-18 10 19-22 10 23-26 10 17-30 6 31-34 5 35-38 7

Q: The diameter of a bull-eye is 4cm. The radius of the middle blue circle is 6cm. The radius of the…

A: Topic:- probability

Q: The scores in a Math 10 quiz are as follows: 9 9 9 4 5 10 8 7 6 12 18 14 7 7 7 13 18 5 a. Find and…

A: Solution

Q: ​What is the total number of scores (N) for the distribution shown in the following table?​ X…

A: Given data

Q: The scores on a statewide chemistry exam were normally distributed with ?=73.08 and ?=6. Gabriela…

A: Given data isMean(μ)=73.08standard deviation(σ)=6

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 .…

A: From the given information,  Consider, X be scores on the Wechsler Adult Intelligence Scale are…

Q: For the following frequency distribution, how many individual scores are in the entire set?

A: In this question, we use the given frequency table to find the  * total score * sum of x The…

Q: The number of cartoons watched by Ms. Smith's first grade class on Saturday morning is shown below.…

A:

Q: Decide if each of the following statements is True or False. Transforming an entire distribution of…

A: Solution: The given statement is “Transforming an entire distribution of scores into z-scores into…

Q: c) What was the sample mean of the number of hours spent relaxing or pursuing enjoyable activities…

A: The 95% confidence interval is (3.53, 3.83).

Q: What is the total number of scores for the distribution shown in the following table? X          f…

A: The frequency distribution table gives information about the number of times an event happened. Here…

Q: The scores on a test for a sample of 36 statistics students are summarized in the following table.…

A: x f fx 8 90 720 16 80 1280 12 70 840 Total 240 2840

Q: d. What is the modal score of the given set of data? e. What is the standard deviation? f. Other…

A: Given that, The frequency distribution table as follows: Class Frequency 46-50 1 41-45 2…

Q: identify the Cummulative Frequency Distribution  Scores               Number of Students    50-59…

A: Cumulative frequency: Cumulative frequencies are obtained by adding each frequency from a frequency…

Q: In moderately asymmetrical distribution, the value of median is 42 and the value of mode is 40. Find…

A: Given: Median = 42 Mode = 40 Distribution is moderately asymmetrical

Q: Fill in the anova table   Source   SS   df   MS       F effect    500   2     ?          ? error…

A: Let K be the number of elements in effect N be the total number  Farmula used F=MSeffect/MSerror

Q: You are given the following set of observations:  98, 77, 26, 33, 88, 90, 79, 81.  What would be the…

A: Here, we have 8 observations, where if the observations are represented by x1,x2,...,x8, then the…

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

Q: The histogram shows the distribution of hurricanes that have hit a country from 1851 through 2015,…

A:

Q: To find the mean, you take the sum of all the survey responses and then divide by what? Additional…

A: Here given,  The table shows the mean commute time (in minutes) by state for workers at least 16…

Q: Suppose that insurance companies did a survey. They randomly surveyed 400 drivers and found that 310…

A: Given: Sample size (n) =400 Number of  drivers claimed (x) = 310

Q: The duration (in days) of human pregnancies follows approximately the ?(266,16)distribution. What…

A: From the given information,  Consider, X the duration (in days) of human pregnancies follows…

Q: For a distribution, the CV is 25.5% and the S.D is 8.5. Calculate the value of the mean.

A: Given: Coefficient of variation Cv = 25.5% standard deviation = 8.5

Q: Approximately what percent of students own somewhere between 30 and 50 CDs? O 50% O 4% O 20% O 25%

A: It is given that the statistical five number of summary of the number of CDs owned as reported by…

Q: Find the mean of the distribution shown below. 3. 7 P(X) 0.21 0.07 0.58 0.14 O 6.23 0.25 O 24

A: To find the mean of the distribution

Q: For the uniform distribution below, what proportion of values are located between 12.3 and 18.6?…

A:

Q: Find each value requested for the distribution of scores in the following table. а. п b. ΣΧ c. Σχ f…

A: a. The symbol Σ defines the sum of all of the scores of a data set.

Q: P(x) 0.03 1 0.07 2 0.33 3 0.36 0.08 0.13 5.

A: Mean(x)=∑x·P(x) Calculating x*P(x)  x P(x) x*P(x) 0 0.03 0 1 0.07 0.07 2 0.33 0.66 3 0.36…

Q: 3. Find each value requested for the distribution of scores in the following table. a. n b. ΣΧ c.…

A:

Q: The following is the height of several students: Jessi: 4'-5", Tom: 6-1", Mike: 5'-9", Julie: 5-1",…

A:

Q: If a distribution of scores is shown in a bar graph, you know that the scores were measured on aln).…

A:

Q: (d) What percentage of GMAT scores are between 447 and 747?

A: We have to find out given probabiity..

Q: Find each value requested for the distribution of scores in the following table. а. п b. ΣΧ c. EX? f…

A:

Q: The scores on a statewide math exam were normally distributed with ?=74 and ?=8. What proportion of…

A: GivenMean(μ)=74standard deviation(σ)=8

Q: 85

A: Given: Mean, μ=75 Standard deviation, σ=12 X = 85

Q: The following data are given to you to find out whether the distribution is platykurtic N= 100, Efd,…

A: Concentration of all the values around the central value of the given data is known as measures of…

Q: Q. 1. Calculate median from the following items : 5, 7, 9, 11, 13, 15, 17, 19, 21

A: