he final grades for a statistics course are listed on the picture. answers must be in 4 decimal places.

Q: Suppose X ~ N (-2,3). Between what c values does 99.73% of the data lie?

A: The mean is -2 and the standard deviation is 3.

Q: Kevin scored at the 70th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: The data shows that the percentage 015

A: Given the data shows that the percentage of female cigarette smokers in a certain country declined…

Q: fraction defective is to be maintained at 0.02, construct a P-chart for these data.

A:

Q: Kevin is taking a self-paced

A:

Q: On a psychology exam with a µ = 76 and σ = 12,  Tom scores at the mean,  Mary had a score of X =…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: After six biology test, Ruben has a mean score of 77. What score does Ruben need on the next test to…

A:

Q: ese 2 questions please using the

A: here mean of x = ∑xn= 67.75 mean of y = ∑yn=69.63 standard deviation of x=Sx = ∑(xi-x)2n-1=2.765…

Q: What’s the percentage for the frequencies?

A: We have convert data in proportikn and percentages

Q: The bar graph above shows the total number of scheduled flights and the number of delayed flights…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: What is the relationship between the amount of time statistics students study per week and their…

A: Hello! As you have posted more than 3 sub parts, we are answering the  3 sub-parts(d, e and f).  In…

Q: John calculated r -.44 for a set of n 10 pairs of values that represent the number of absences from…

A: Given that r = -0.44 midterm exam score ( y )   number of absences from class (x)

Q: The measures which give you the spread of the data values are

A: In statistics, the variable is related to the quantitative data. If a data with a single variable is…

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: Jesse was ranked 36th in his graduating class of 180 students. At what percentile is Jesse's…

A:

Q: Kevin scored at the 70th percentile on a test given to 9940 students. How many students scored lower…

A: Given Kavin got 70 percentile. Total students are 9940.

Q: Suppose you have information about average heights of a random sample of airline passengers. The…

A:

Q: Angela took a general aptitude test and scored in the 84th percentile for aptitude in accounting.…

A: Obtain the percentage of the scores that were at or below her score. From the information, given…

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: Since the beginning of the semester, Mr. Bates has regular workouts where his Apple Watch® keeps…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: The model at the right best represents what percentage?

A: Given , A square in which many small squares are present. Now when we count the number of small…

Q: David surveyed his employees on the time it takes them to get to work. The results are shown in the…

A: According to given graph, we can see that only first two frequency takes less than 40 minutes So,…

Q: Complete the following statements: 1. In general, _________% of the values in a data set lie at or…

A: Solution : Definition of percentile - The percentile indicates the values below which given…

Q: estor bought common stock of Blackstone Company on several occasions at the following prices. Tumber…

A: Given data,   Number of shares Price for share 100 $40 200 $31 400 $25   What is the…

Q: Compare the two groups (male and female students) in terms of their measures of location and…

A: Introduction: To compare the two groups, we have first separately identified the students in the two…

Q: Vp Pq n

A: Given that

Q: O B. Yes, the pulse rate of beats per minute appears to be an outlier because it is far away from…

A: Answer 77)  The expression Zα  denote the Z score with an area of αto its right.    p(z>zα)=α

Q: After six biology tests, Ruben has a mean score of 74. What score does Ruben need on the next test…

A: The mean score of Ruben after six biology tests is 74.

Q: Benny wonders whether coffee consumption (measures in $ per week) depends on income (measures in $…

A: Here we want  to analyze whether coffee consumption depends on income. We will collect the data for…

Q: The manager of Jerry's Barbershop recently asked 15 customers to punch in a time card when 1st…

A: See the handwritten solution

Q: How well does the line describe the data? What is the mileage that you would expect a 4000-pound car…

A: From the Scatter plot: Regression equation is y=-0.0052x+45.645 where, intercept a=45.645 and slope…

Q: Plot the following six points: (- 2, 2) (1, 5) (– 5, – 1) (1, 0) (4, - 4) (0, – 3)

A: The direction on the graph of x-axis and y-axis is given below. The origin is (0,0). The horizontal…

Q: In a random sample of college freshmen, the proportion who use text messaging daily was 0.93. In a…

A: Given, In a random sample of college freshmen, the proportion who use text messaging daily was 0.93…

Q: The table to the right gives the number of people by age group in a town of 100 000. (a) Add two…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to…

A: The given scatter plot is a linear and it's slope is negative. Given that, at zero miles the value…

Q: A scatterplot of data is shown. y 8 4 2 0 2 4 6 8

A: For the given scatter plot

Q: Give 2 real-life situations where the concept of the measures of position of grouped data are used.…

A: We have to tell 2 real-life situations to understand the concept of measures of position of grouped…

Q: elect the term that correctly completes the statement.   The color of hats worn by baseball players…

A: The quantitative data is numerical and the qualitative data is non-numerical.

Q: After six biology tests, Ruben has a mean score of 78. What score does Ruben need on the next test…

A: Note that, the required mean is 80. The total number of tests after the next test is 7.

Q: Graph the data below and then answer the questions that follow.

A:

Q: After six biology tests, Ruben has a mean score of 75. What score does Ruben need on the next test…

A: Let 'x' denote the score Ruben need to score on the next, i.e. seventh test so that his average…

Q: On a cold day in Minneapolis, the afternoon temperature was 48 degrees before a cold front moved…

A:

Q: What is the p value and z value?

A: The sample sizes are 400 and 500.

Q: For the data shown, answer the questions. Round to 2 decimal places. 10.4 12 2.9 21.4 5.3 22.8 2.6

A: Given data, 10.4,12,2.9,21.4,5.3,22.8,2.6   Sort the data in ascending order.…

Q: Determine the question (X) that converts each situation to Yes/No data. a) The proportion of cars…

A: Researchers conduct survey using questionnaire comprising both objective and subjective questions.

Q: After six biology tests, Ruben has a mean score of 72. What score does Ruben need on the next test…

A:

Q: A business department is trying to determine if their program is competitive. They survey recent…

A: Given information: The MINITAB output results for the one-same t test is given.

Q: After taking a series of 4 classroom examinations, John obtained a mean score of 82. How much score…

A: The average score obtained by John in 4 examinations is 82. Evaluate the total obtained by John in…