A test is used to assess readiness for college. In a recent​ year, the mean test score was 20.620.6 and the standard deviation was 4.94.9. Identify the test scores that are significantly low or significantly high. What test scores are significantly​ low? Select the correct answer below and fill in the answer​ box(es) to complete your choice.

Q: middle 99.7% of car costs are between what values

A: Given that  Mean(μ) = $22,000 Standard deviation (σ) = $2000   We know that  68-95-99.7 Empirical…

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: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: The data on the number of adults in a group of five are given as…

Q: Seventy-six percent of Americans favor spending government money to develop alternative sources of…

A: Given that  p = 75%    and.   n = 140 By using the Binomial distribution

Q: Find the mean, 80th percentile and standard deviation: 2,-3,7,5,-2,3

A: Solution-: Given data: 2,-3,7,5,-2,3 We want to find, (a) The mean=? (b) The 80th percentile=? (c)…

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A:

Q: Iculate the mean and median and report the lower value of two.

A: Answer The sample size [n] = 10-7.4, -3.4, -2.7, -2.2, -1.9, -0.8, 0.3, 0.9, 0.9, 1.1The mean:The…

Q: John's utility bill for the last 5 months are $21.87, $21.98, $19.91, $26.39, and $29.51. Find…

A:

Q: Find the range , the standard deviation, the variance for 45, 75, 84, 58, 81, 65 , 98,63,76

A: Range = Maximum - Minimum = 98 - 45 = 53   The standard deviation can be determined using the…

Q: The ACT math scores of a particular high school in New Jersey are approximately normally…

A: Given that 99.7% of the scores, centered about the mean, are between 200 points and 800 points. So…

Q: Use the range rule of thumb to identify the values that are significantly low, the values that are…

A:

Q: A Population has a Mean of 90 and a standard deviation of 25.  A sample of 20 college students is…

A:

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

A:

Q: If you have the following test scores: 84, 66, 78, 96, 60, and 72, what is your mean test score?

A: The answer is given below:

Q: A study studied the birth weights of 2,008 babies born in the United States. The mean weight was…

A: From the provided information, Total babies (N) = 2,008 Mean weight of babies (µ) = 3234 grams…

Q: Joey took examinations in Algebra, Physics, Chemistry and English and scored 84, 79, 88 and 93…

A:

Q: Find the means, variance, and standard deviation.  Data: 10, 60, 50, 30, 40, 20,25

A: We have given that,  X :- 10, 60, 50, 30, 40, 20, 25 Then,  We will find the Mean, Variance and…

Q: he highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: Ans#- The highway mileage (mpg) for a sample of 8 different models of a car company can be found…

Q: Members Best Investment Bank created a global product. The research team found the product mean was…

A: The given mean is 123 and standard deviation is 46.

Q: a student had 93% in chemistry had a class average of 85% and standard deviation of 8%. the same…

A: Consider that the mean and standard deviation of a random variable x are µ and σ, respectively.…

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

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

A:

Q: SAT scores have a mean of 1026 and a standard deviation of 209. ACT scores have a mean of 20.8 and a…

A: The SAT scores, mean, and standard deviation are:The ACT scores, mean, and standard deviation are:

Q: In my Biology Class, to pass the course the minimum score must be 67. Biology class has a mean of…

A: Let, X= scores of the biology class Given that X follows a normal distribution with mean= 81 and…

Q: highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find…

A: given data, sample size=8we have to find out the mean , median, mode and  standard deviation for the…

Q: Raul received a score of 62 on a history test for which the class mean was 52 with standard…

A:

Q: The data are daily high temperatures in a town for one week. Find the mean, median, range, sample…

A: From the provided information, The data values are as follow: 59, 50, 65, 68, 72, 80, 82 Sample size…

Q: Explain why each scenario is either sample or population standard deviation. All SCAD students are…

A: Survey based question

Q: Given the data: 47, 55, 57, 63, 73. Find the standard deviation. Round the final answer to the…

A:

Q: a pediatrician has 10 preschoolers clients. The height of each client was measured in centimeters.…

A: First height measured in centimetres. Alex height found above the mean, median and mode Than height…

Q: Given the sample data 85 85 85 85 85 85 85. Find the variance and the standard deviation of the…

A: Let X denote the sample data. The standard deviation of the data can be calculated as SD =…

Q: The mean height of a basketball team is 6 feet with a standard deviation of 0.2 feet. The team's…

A:

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: Which test was better?. Gina took a midterm in her math class and her biology class. After she gets…

A: The objective is to calculate z score for math test for Gina. we have given  x=47 mean(x)=39…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.