Professor Ivy gives a test and finds that her students score an average of 74 with a standard deviation of 8 points. Assuming a Normal Distribution of scores, 95% of her students would score between what two values? Group of answer choices 50 - 98 66 - 82 58 - 90 68 - 78

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

A: GivenMean(μ)=70%standard deviation(σ)=8%

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: Students pass a test if they score 50% or more. The marks of a large number of students were sampled…

A: Given information- Population mean, µ = 42% Population standard deviation, σ = 8% We have given that…

Q: Suppose your statistics professor graded your test with a Z Score.  You earned a 3.25 on a test with…

A: Answer:- Given, Mean, µ = 71  Standard deviation, σ = 8  And Z-score = 3.25  We need to find the…

Q: n a set of score, the coefficient of variation (in percentage terms) = 50% and standard deviation =…

A: The coefficient of variation is the ratio of the standard deviation to the mean. It is a measure of…

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

A: Given data: If average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 68% of…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

A:

Q: A person scores 81 on a test of verbal ability and 6.4 on a test of quantitative ability. for the…

A: Consider X is a random variable defined as the score of the verbal ability test of a person.Consider…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: Molly earned a score of 940 on a national achievement test. The mean test score was 850 with a…

A:

Q: 5.) If you choose 50 companies, what is the probability that the percent gain of the company is…

A:

Q: Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8…

A: Let X = speed of the car. X~N73, 82 To calculate P[70<X<75]. So,…

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: Molly earned a score of 920 on a national achievement test. The mean test score was 825 with a…

A: Given that, The proportion of students had a higher score than Molly is,

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: 1) Z-SCORE. Which has a better relative position: a score of 75 on a statistics test with a mean of…

A: HI, we are supposed to answer one question at a time. Since you have not mentioned which question to…

Q: n a survey of 18 year old males, the mean weight was 160.5 pounds with a standard deviation of 46.4…

A: GIVEN DATA, μ=160.5σ=46.4we have to find out the percentile for the given data

Q: The GMAC Insurance company reported that the mean score on the National Drivers Test was 67.5 with a…

A:

Q: It takes an average of 12.1 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: The random variable is time to blood clotting.We have to test whether the population mean time for…

Q: 5 students were given a test. The average and standard deviation of the 5 scores were found to be…

A:

Q: Two students, Will and Tom, want to find out who scored relatively higher on a science midterm. The…

A: We have to find z score and Which student scored higher on the midterm when compared to their…

Q: Write a sentence in your lab report explaining the effect that adding the two new data points had on…

A: From the given information,Original data points = {60,31,50,48,50,54,56,62,53}New additional points…

Q: There are two major tests of readiness for college, the ACT and the SAT. ACT scores are reported on…

A: From the provided information, For ACT score: Mean (µ) = 21.5 Standard deviation (σ) = 5.4 For SAT…

Q: Suppose you were told you scored two standard deviation below the mean on a measure where the main…

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Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

A:

Q: mar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the test…

A: given data, μ=54.5σ=3.1Omar scores exactly 0.75 standard deviations above the mean z=0.75raw score…

Q: Show your solution:  If Peter got a 79 on a Math Test with a mean score of 85 and a standard…

A: The z-score is calculated asz=x-μσ

Q: For a statistics test the mean is 63 and the standard deviation is 7.0, and for a biology test the…

A: We know that ,Z-score=x-μσ

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 33 beats…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: The mean score on the ACT test was 21.5 and the standard deviation was 5.0. The mean score on the…

A: ACT score μ1 = 21.5σ1 = 5.0x1 = 26SAT score μ2 = 515σ2 = 100x2 = 605 which score will relatively…

Q: Omar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.