Math

StatisticsQ&A LibraryPersonnel tests are designed to test a job applicant's cognitive and/or physical abilities. A particular dexterity test is administered nationwide by a private testing service. It is known that for all tests administered last year, the distribution of scores was approximately normal with mean 74 and standard deviation 7.4 a. A particular employer requires job candidates to score at least 79 on the dexterity test. Approximately what percentage of the test scores during the past year exceeded 79? b. The testing service reported to a particular employer that one of its job candidate's scores fell at the 98th percentile of the distribution (i.e., approximately 98% of the scores were lower than the candidate's, and only 22%were higher). What was the candidate's score?Start your trial now! First week only $4.99!*arrow_forward*

Question

Personnel tests are designed to test a job applicant's cognitive and/or physical abilities. A particular dexterity test is administered nationwide by a private testing service. It is known that for all tests administered last year, the distribution of scores was approximately normal with mean

74 and standard deviation 7.4

a. A particular employer requires job candidates to score at least

79 on the dexterity test. Approximately what percentage of the test scores during the past year exceeded 79?

b. The testing service reported to a particular employer that one of its job candidate's scores fell at the 98th percentile of the distribution (i.e., approximately 98% of the scores were lower than the candidate's, and only 22%

were higher). What was the candidate's score?

were higher). What was the candidate's score?

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: A(n) ________________________ distribution has mirror image sides such that if the distribution coul...

A: Skewness:The degree of symmetry of the distribution is called skewness. There are three measure of t...

Q: Suppose x, the grade on a midterm exam, is normally distributed with mean 70 and standard deviation ...

A: It is given that the mean and standard deviation are 70 and 10, respectively.

Q: Questic Among 21-to 26-year-olds, 36% say they have used a computer while under the influence of alc...

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have s...

Q: 2.Researchers studied selenium levels in beef raised in a low selenium region of the United States. ...

A: Step-by-step procedure to obtain the symmetry using Excel software is as follows:First enter the dat...

Q: Please see picture

A: Solution:1.The expected value of X is obtained below:

Q: Please show TI 84 steps

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of ...

Q: You recorded the time in seconds it took for 8 participants to solve a puzzle. The times were: 15.2,...

A: Given data,

Q: For a sample of 150 that has a mean of 6540 and a standard deviation =.89, calculate the 95% confide...

A: From the given dataSample size 150, mean 6540 and standard deviation 0.89

Q: A group takes a Personality test of Extraversion and they all take the test. They find that the grou...

A: It is given that the mean and standard deviation are 50 and 10, respectively.

Q: The time required for an automotive center to complete an oil change service on an automobile approx...

A: According to the question the time required for an automotive center to complete an oil change servi...

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n = ...

A: Click to see the answer

Q: About 1% of the population has a particular genetic mutation. 400 people are randomly selected.Find ...

A: From the given information,x is the random variable that follows binomial distribution

Q: Research done at the Harvard School of Public Health showed that regular soda drinkers may have a te...

A: (1)A dependent or response variable is measured while conducting an experiment. Its value depends on...

Q: In a state's Pick 3 lottery, you pay $1.48 to select a sequence of three digits (from 0 to 9), such ...

A: Given Total number of picks in lottery = 3Total number of digits from 0 to 9 = 10The amount paid to ...

Q: Consider a binominal experiment with 2 trials and p=0.04 d. Find the probability of at least 1 succe...

A: d)From the given information, the binomial experiment with 2 trails and p=0.04 The probability mass ...

Q: Survey question asked among people 12 and older how many cell phones are being used in your house? 2...

A: The probability if a randomly selected person is chosen his or her household will have four or more ...

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if...

A: Solution: We are given:

Q: Assume that different groups of couples use a particular method of gender selection and each couple ...

A: Introduction:Consider giving birth to a girl to be a success. The probability of success is, p = 0.5...

Q: Four students are randomly selected from an algebra class and asked whether they suffer from math an...

A: Introduction:On random selection, 4 students are selected into the sample.When asked whether they ha...

Q: Calculate the probability for each of the following events: (A) X < 0:9 when X has the standard u...

A: The probability density function (PDF) of the uniformly distributed random variable with parameters ...

Q: Suppose the correlation between height and weight for adults is +0.80. What proportion (or percent) ...

A: From the given information,The correlation between weight and height for adults is 0.80

Q: Hello, I am completely stuck on finding frequency distributions. I do not understand the process can...

A: Given data set is17.7, 28.7, 19.2, 27.9, 33.5, 22.3, 22.4, 44.9, 26.5, 18.3, 27.7, 31.8, 23.8, 28.6,...

Q: A laboratory tested 25 chicken eggs and found that the mean amount of cholesterol was 225 milligrams...

A: Confidence interval when population standard deviation is not known:The formula of confidence interv...

Q: The student council is hosting a drawing to raise money for scholarships. They are selling tickets f...

A: It is given that the number of tickets is 600 and the numbers of prizes are 1 grand, 4 second, and 1...

Q: Brandon Lang is a creative entrepreneur who has developed a novelty soap item called Jackpot to targ...

A: Note:Hey, since there are multiple sub-parts question posted, we will answer first three sub-parts a...

Q: Question 2 Part A and B

A: Computation of sum of squares Between:The comparison of three means (ANOVA) is conducted by using EX...

Q: E and F are mutually exclusive events. P(E) = 0.91; P(F) = 0.42. Find P(E | F)

A: Mutually Exclusive Events: The events E and F are mutually exclusive events. That is, P(E and F)=0.

Q: Help

A: The formula of contingency table is: Purchase likelihood18-3435-4445-5455+TotalMore likely2093863994...

Q: Consider a binominal experiment with 2 trials, and p=0.4 d. Find the probability of at least one suc...

A: In this context, X has a Binomial distribution with parameters n = 2 and p = 0.4. Since X is a discr...

Q: A survey asked buyers whether color, size, or brand influenced their choice of cell phone. How many ...

A: This problem involving 3 sets : Color, Size and Brandn(Color)=5n(Size)=8n(Brand)=16n(Color and Size)...

Q: Find the mean of the data summarized in the given frequency distribution. 12) The highway speeds of ...

A: Mean for grouped data:The formula to find mean for grouped data is as follows:

Q: Please See Picture

A: X- be the winnings when we quit.Case-1 win in first spinProbability of win in first spin = 18/38prof...

Q: A medical salesperson is to visit the various members of the staff at a clinic. He must see 8 doctor...

A: It is given that the sales person must see 8 doctors, 6 physicians assistants, 12 nurses, 3 medical ...

Q: A Gallup pool indicated that 29% of Americans spent more money in recent months than they used to. B...

A: As per the question,a)Population of interest is the all Americans who are 18 or older

Q: What is tα/2,df for a 95% confidence interval of the population mean based on a sample of 15 observa...

A: Solution: We have to find the t-critical value (tα/2) at the given significance level 1- 0.95=0.05 b...

Q: Assume that police estimate that 13% of drivers do not wear their seatbelts. They set up a safety ro...

A: From the given information,Probability for do not wearing seat belt is 13%And number of cars are 40

Q: What would the 95% confidence limits for a sample of 120 with a mean of 51 and a standard deviation ...

A: We are given:

Q: Research done at the Harvard School of Public Health showed that regular soda drinkers may have a te...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: How can graphics and/or statistics be used to misrepresent data?

A: Graphical representation or statistical data can be misleading or misrepresented. Some statistics ca...

Q: X Y 1 2.5 4.4 1 2 13.6 4 20.7 4 25.6 36.2 5 Using the formulas for linear regression, find the const...

A: From the given information,

Q: An automobile manufacturer finds that 1 in every 2000 automobiles produced has a particular manufact...

A: From the given information,An automobile manufacturer finds that 1 in every 2000 automobiles produce...

Q: Question 1

A: Let mu1 be the sample mean of acute schizophrenics and mu2 be the mean of chronic schizophrenics.Hyp...

Q: In a program designed to help patients stop smoking, 195 patients were given sustained care, and 8...

A: The level of confidence is provided as 95% or 0.95. Therefore, the level of significance is equal to...

Q: Assume the random variable X is normally distributed with mean μ=50 and standard deviation σ=7. Find...

A: Solution:From the given information, mean value is 50, standard deviation value is 7. Let the random...

Q: The undergraduate admission rate at a certain university for a certain year was 7%. a. Assuming ...

A: a.The probability that exactly 8 out of 100 applicants will be admitted is obtained below:From the g...

Q: Market-share-analysis company Net Applications monitors and reports on internet browser usage. Accor...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: 3. Suppose a new sample is chosen and you got the following estimated OLS line: predicted birthweigh...

A: 3. From the given information, the predicted OLS line is, biethweight_in_oz =120-3.2 dailycigarettes...

Q: A clinical trial is planned to compare an experimental medication designed to lower blood pressure t...

A: 1) The appropriate Null and Alternative Hypotheses are given below: From the given information, the ...

Q: According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per...

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have s...

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=76.0 beats per m...

A: It is given that mean and standard deviation are 76.0 and 12.5, respectively.