Consider a value to be significantly low if its z score less than or equal to −2 or consider a value to be significantly high if its z score is greater than or equal to 2.   A test is used to assess readiness for college. In a recent​ year, the mean test score was 22.2 and the standard deviation was 4.9. Identify the test scores that are significantly low or significantly high.

Q: Use z-scores to compare the preformance of a student on two midterms: the first, with a mean of 78…

A: Given Information: The performance of a student on two midterms: First: Mean = 78, standard…

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: A cement manufacturer claims that the average weight of his product is 40 kgs. with a standard…

A:

Q: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample…

A: formula :

Q: Consider a value to be significantly low if its z score less than or equal to minus−2 or consider…

A: In the question the values are printed two times as 19.419.4. For convenience, the values are taken…

Q: A score that is 9 points above the mean corresponds to a z score of +1. What is the population…

A: As given: A score is 9 points above the mean.  It corresponds to a z score of +1.  It is required…

Q: The mean of a set of data is 108.06 and its standard deviation is 115.45 What is the z score for a…

A: Z-score = 3.3045 answer.

Q: If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z score for a…

A: We want to Z-score

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

A:

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Given mean = 1503Standard deviation = 308The minimum score required for admission = 1626The Z score…

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: standard deviation of 0.34 ounces. A sample of 79 cans of coffee is taken and ?⎯⎯⎯x¯ was found to be…

A: In question, Given that The weight of all cans of coffee has a standard deviation of 0.34 ounces. A…

Q: A analyst wants to determine if the average TA spends less time solving a question than the average…

A: Solution: LetX1 be the time to solve a question by TA and X2 be the time to spend by a honor…

Q: If a normal has a mean of 38.0 and a standard deviation of 1.25, what is the value of the random…

A: According our policy we can answer only first part for remaining please repost the question.

Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. What…

A: We have given that,  Let X be the GPA scores from normal distribution with average or mean (μ) =…

Q: For Jimena to be accepted into her favorite college, she will have to earn an entrance exam score at…

A: The exam scores are normally distributed with the mean, μ=790, and standard deviation, σ=50. Now, it…

Q: A scientist has read that the mean birth weight, , of babies born at full term is 7.5 pounds. The…

A: a) Null and Alternate Hypothesis: H0: μ=7.5H1: μ>7.5 Therefore, H0: μ is equal to 7.5 H1: μ is…

Q: A standardized test of intelligence is scaled so that the mean IQ is 100, and the standard deviation…

A: Given that information  Mean = mu= 100  Standard deviation = s =15  Zscore = (x - mu)/s

Q: On the final examination in Engineering Data Analysis, the mean was 72 and the standard deviation…

A: Given, a) The standard scores (z-values) of students receiving the grade of 65 is,

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: The sample mean is 69.9 bpm and the standard deviation is 11.1.

Q: The mean difference equals 1.2, the standard deviation of the difference equals 1.5, and n equals…

A: It is given that mean difference is 1.2, the standard deviation of the difference is 1.5 and the…

Q: The distribution of head circumference for full term newborn female infants is approximately normal…

A: The distribution of head circumference for full-term newborn female infants is approximately normal…

Q: If the mean score on the final exam is 70 with a standard deviation of 10 then the test score of a…

A: Given Mean =70 Standard deviations=10 Z=-1.5

Q: mark is provided a score of X=57 that corresponds with a score of X=57 that corresponds with a…

A:

Q: The mean height of 50 male students who showed above-average participation in college athletics was…

A: Given information: n1=50 x1-bar=68.2 s1=2.5 n2=50 x2-bar=67.5 s2=2.8 Consider, the pooled variance…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A:

Q: The average weight of a chicken egg is 57 grams with a standard deviation of 5.1 grams. What is the…

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will…

A:

Q: A set of data items is normally distributed with a mean of 60. Convert the data item of 55 to a…

A: Given that: Mean = 60Standard deviation = 5Data item = 55

Q: t is known that the average time required to complete a test exam is 80 minutes and the standard…

A: Given Information: Mean μ=80 min Standard deviation σ=10 min. To find how many minutes should the…

Q: On a standardized test, Jose scored an 87 and Mia scored a 74. The distribution of test scores for…

A: Given Data : Population Mean,μ = 76.28 Population Standard Deviation,σ = 7.02

Q: A manufacturing company wants to know if the product waste that they produce complies with the…

A: Given information Sample mean x̅ = 188 kg Population mean µ = 200 kg Sample size = 30 Standard…

Q: What z-score would be associated with the value x = 172?

A: Given that Mean = 112 SD = 10 And value X = 172

Q: For a medical study, a researcher wishes to select people in thr middle 75% of the population based…

A: Introduction: Definition: Z-score A Z-score is a numerical measurement that describes a value's…

Q: Assume that the SAT test scores are normally distributed with a mean score of 1200 and a…

A:

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Let X denote the combined SAT scores for the students at a local high school and it follows normal…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: 32 individuals from a population and the mean of the population is 120 and the standard deviation of…

A: From the central limit theorem the sample mean blood glucose level will follow normal distribution…

Q: The mean grade in the Physics examination was 73 and the standard deviation was 8. Determine the…

A:

Q: Is the fat content per serving of a peanut butter significantly different from what the manufacturer…

A: We have given that  Population mean = 15 Sample mean = 15.6 Sample standard deviation = 1.8 Sample…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Answer:- Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to μ = 69 bpm.…

Q: ​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Given Claim : The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm.…

Q: Cotinine levels were measured in a group of non-smokers exposed to tobacco smoke (n =40), the mean…

A: Introduction: Denote μ1, μ2 as the true mean continine levels in nonsmokers exposed to tobacco smoke…

Q: On a standardized test, Jose scored an 87 and Mia scored a 74. The distribution of test scores for…

A:

Q: you obtained a random sample of blood glucose levels from 32 individuals from a population and the…

A:

Q: A cement manufacturer claims that the average weight of his product is 40 kgs. A sample of  45 bags…

A: We have given that  n=45 , Xbar=38.71 , S=2.35 , mu=40

Q: USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do…

A: Given data : Given Data : For male x̄1 = 136.64 n1 = 44 σ1= 35 For…

Q: The standard deviation of the fuel consumption of a certain car is hypothesized to be equal to 1.72…

A: Solution: From the given information, the sample standard deviation is S=1.04, population standard…

Q: given distribution has a population mean, μ, of 116 and a population standard deviation, σ, of 11.…

A: Here we want to calculate z score from the given information.

Q: On a standardized test, Jose scored an 87 and Mia scored a 74. The distribution of test scores for…

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.