a) Calculate the z-score for Roberto's test grade. b) Calculate the z-score for Derek's test grade. c) Which person did relatively better?

Q: Find the raw score which corresponds to z=1.6?

A:

Q: Compute r, the correlaton coeffcient, USma the follout data X. 434

A: The correlation coefficient r is computed using the formula below: r=n∑xy×-∑x∑yn∑x2-∑x2×n∑y2-∑y2…

Q: An employee had accumulated 20 competency credits with the grade with B's, 10 credits with C's, and…

A: make a table as shown  grade grade points credits earned grade point×credit A 4 20 80 B 3 25…

Q: After giving a statistics exam, Professor Dang detemmined the following five-number summary for her…

A: Five number summary is a nice way to represent data  It includes minimum, first quartile Q1, Second…

Q: he weight of female employees of a company are recorded as follows: 45 53 47 46 53 49 54 60 46 48 56…

A: In this given question, concept of stem and leaf plot is applied. Stem and Leaf A stem and leaf plot…

Q: In a survey of 500 human resource professionals, 70% said that the appearance of a resume is very…

A: Use simple formula

Q: From the analysis of students’ marks, Mr Adam decided to do one-to-one consultation with his…

A: If we consider that the students should bring the marks above the median, they are only exempted…

Q: Of 200 people who purchased home computers from a national company, 44 received machines with…

A:

Q: e) From the analysis of students' marks, Mr Adam decided to do one-to-one consultation with his…

A: According to the information given in the problem we proceed as follows,

Q: c. How could you proceed to find out how many of the eligible people would actually join the new…

A:

Q: How did you get p value from hats given?

A: Solution-: We have test statistic=t_{stat}=-2.115 and df=87 We want to find the how to get p-value=?…

Q: Of the 300 visitors polled,O liked to ski or snowboard. (Type a whole number.)

A:

Q: The results for a survey of 120. students who were selected randomly are listed below: • 60 students…

A: Given Data: The number of students in the survey is: n=120 The number of students has cell phones…

Q: What is the value of a?

A: Given expression: a+x5 Also, given that co-efficient of x2 is 640. We need to find the value of a.

Q: The 5-number summary of scores on a test is 95 125 142 148 183 Based on this information,

A: Answer :- There are high outlier followings are the Answer of the question

Q: Find and interpret the z-score for Montana, which had 1.9% foreign-born residents.

A: a) The percentage of foreign-born residents is 1.9%. That is, score=1.9 From the output, mean=8.73…

Q: Does this historgram follow a normal distributon and why? Based on the histogram, how many pigs…

A: Given a histogram showing the percentage of pigs and their weights in lbs.

Q: The indicated z score is

A: Given a standard normal distribution graph with mean 0 and standard deviation 1.  We need to find z…

Q: lowing is the correct decision?

A:

Q: M= 90 SD= 7.8 What raw score is needed to be in the top 8%?

A: *Mean μ=90SD σ=7.8Top 8%⇒P(X>x)=0.08⇒P(X≤x)=092Corresponding  z-score is obtained as

Q: A research report from an independent-measures study states that there are significant difference…

A: From the provided information, The degree of freedom for treatment (k – 1) = 3 A) The required…

Q: Why must the edge of the meter stick, rather than the broader side, be adjacent to the dimension…

A: To answer the given question

Q: A student receives the following grades, with an A worth 4 points, a B worth 3 points, a C worth 2…

A: A student receives the following grades: A worth 4 pointsB worth 3 pointsC worth 2 pointsD worth 1…

Q: What is the value of A?

A:

Q: For a population with u = 80 and o = 10, what is the X value corresponding to z-score = - 2.00? Edit…

A:

Q: Z-score in

A: Population mean and standard deviation:

Q: Waht sould we do with a large P-value?

A: The P-value is the probability we get the value of the test statistic, or something "more extreme"…

Q: Two HR managers ranked the 12 entries to hire executives for operations department of a hospital is…

A: We have given ranks by two HRs and we have to find how much they are agree or disagree with each…

Q: Use the following scores to find the value of Ex= 3 4 2. 2.

A: Given: x 3 2 4 2

Q: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

A: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

Q: 6. Answer the following questions for the following heights (in centimeters) of children in one…

A: Solve the following

Q: 23. Calculate the SS for your D scores:

A: We have given that the researcher would like to evaluate the effectiveness of a pain-relief patch…

Q: What is P(A and Y) ?

A: here use basic probability  Probability  = =no of favorable outcomes total outcomes

Q: Given Q3 = 13.01, median = 10.84, and Q1 = 5.06, what is the location of the upper fence for a…

A: Given,Q3=13.01Q2=median=10.84Q1=5.06

Q: Con side that the ten Percent of indlividuals getting tested for the Virus, have the Virus. Now…

A: Let A be the event denoteds the person having virus and B be the event denote the event the person…

Q: In a survey of 3063 adults aged 57 through 85 years, it was found that 80.8% of them used at least…

A: Number of adults surveyed, n = 3063 And proportion of them used at least one prescription…

Q: 4) Compute the p-value, and use it to assess the company's claim.

A:

Q: Determine the test score of John in Statistics if he has a z-score of 1.89. (SD = 4, mean = 82)

A:

Q: Are the strengths of Alloy A more consistent than Alloy B?

A: Data   For Alloy  A  88,79,84,89,81,83,82,79,82,85,88,80,85,87,80,78,87,90,83,81  For Alloy B…

Q: determine the alternative hypo, z-value

A: Here given,  Sample size n = 300 140 adults engaged to computer  so here p^ = 140300=0.466666= 0.47

Q: mr. One researcher wants to estimate the proportion of MU students who are vegetarian, 6 answered…

A: Sample size is 30. There are 6 students are vegetarians. The hypotheses are given below: Null…

Q: 1. What percentage of scores fell within ±1 SD for ZADHD?

A: Introduction: The "ZADHD" values indicate the z-scores of ADHD.

Q: Determine the test score of John in Statistics if he has a z-score of 1.9. (SD = 4, mean = 85)

A: Given that in statistics, John has z-score of 1.9 where mean score is 85 and SD is 4. Here, to find…

Q: what is the measure of <C?

A: Theorem used: The angle subtended by the minor arc on circle is half of the angle subtended by the…

Q: A car safety association conducted tests to measure the stopping distances of a new model of car and…

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

Q: 1. Identify whether the numbers are statistics or parameters.    a. Of all US third grade teachers,…

A: A parameter is a value that describes a whole population. For example, Population mean A statistics…

Q: Based on the histogram that shows the heights of hibiscus plants in inches i. How many plants have…

A:

Q: In a survey of 3343 adults aged 57 through 85​ years, it was found that 83.3%of them used at least…

A: Obtain the number of the 3343 subjects used at least one prescription medication. The number of the…