Express the confidence interval 893.5+-133.5 in interval form. Express the answer in either decimal format or as percents

Q: esearch scientist wishes to test the claim that the mean number of units taken by community college…

A: From the given information, We see that no information about the normality of the population is…

Q: ind the mean score 50-59: 6 60-69:5 70-79: 7 80-89: 12 90-99: 10

A: Solution: Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) 50-59 6 54.5 327 60-69 5…

Q: The mean score on a set of 25 tests is 76. What is the sum of all the test​ scores?

A: The mean (aka the arithmetic mean, different from the geometric mean) of a dataset is the sum of all…

Q: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.  Explain…

A: Given: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.

Q: A very good professional baseball player gets a hit about 35% of the time over an entire season.…

A: Solution:- The commentator is wrong because the law of averages does not apply in this situation.…

Q: The mean monthly salary of 32 men is P28,500 while that of 38 women is P24,400. Find the mean salary…

A:

Q: Which number best approximates risk associated with tea drinking in men?

A: Tea drinking cancer patients in men = 140Total cancer patients in male = 200Tea drinking other…

Q: For a class of 60 students, the marks obtained in last semester’s Accounting exam showed that the…

A: Given that third quartile, Q3 = 70 marks

Q: the average score of 10 students is 85. what will be the mean if another student will take the test…

A: From the provided information, Average score of 10 students = 85

Q: The mean height of 24 male workers in a factory is 62 inches and the mean of 36 female workers in…

A: Answer: From the given data, Number male workers = 24 = n1 Number of female workers = 36 = n2 Mean…

Q: 26. If the random variable X~ \(,0²), then what is the median of X?

A: Let X denotes the random variableX~Normal (μ, σ2)To find median of X Formula UsedWhere M denotes…

Q: The temperature for the last 5 days were: 75⁰F, 66⁰F, 80⁰F, 68⁰F and 73⁰F. What was the mean…

A:

Q: cognitive psychologist has recently developed a test to measure the emotional intelligence of…

A: Given,mean(μ)=95standard deviation(σ)=10

Q: 84 Students Who Took The Achievement Test Last Oct. 2020 If the mean is 88, S = 2.50 How Many…

A: Answer - Given, Sample size n = 84 and the mean is μ = 88, S = 2.50                 How Many…

Q: On his 5 tests, Ahmad earned a total of 450 points. What was his mean number of points earned per…

A: The objective of this question is to find the mean number of points Ahmad earned per test. The mean…

Q: Determine the standard deviation in the total waiting time.

A:

Q: Find the range & the standard deviation :  74,70,70,66,68,69,69

A: Given terms are 74,70,70,66,68,69,69

Q: The mean of 14 numbers is 49. Removing one of the numbers causes the mean to decrease to 43. What…

A: given data:mean =49n=14 Removing one of the numbers causes the mean to decrease to 43new total…

Q: EXPLAIN WHAT A RELIABILITY COEFFICIENT IS AND WHAT A COEFFIENT OF 0.90 MEANS.

A: we have to discuss about reliability coefficient

Q: Describe one-tailed p-values.

A: The choice of a specific value of the level of significance is completely subjective and hence the…

Q: the average (mean) score on an exam was 76.52 in a class consisting of 14 supply chain students and…

A: Answer:- Given, A class consisting of 14 supply chain students and 11 HR students.  That is, Total…

Q: The mean of 12 numbers is 48. Removing one of the numbers causes the mean to decrease to 45. What…

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

Q: The percentile gives an indication of the relative position of the scores. True or False?

A: Partition values are the values which divide the series into a number of equal parts.  * Three…

Q: Please show the full solution and proper notation and terminology. A small town contains 1,500…

A:

Q: Adam just graded his exams. the mean score is 74, the median is 76.5, the range is 65 and the…

A: given data  mean = 74 median = 76.5 range = 65 standard deviation = 11 add 7 points to each score…

Q: Why is the sum of the sum of six deviations -2, -1, -1, -1, 0, 5 when added =0?

A: Solution:It is one of the property of sample mean that the sum of deviations above average and the…

Q: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: What is the percentile rank x=15 and what is the score for 75th percentile?

A: If the we have no of scores is 15 then we have formula for percentile rank as:…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: The mean of 200 observations was 80, later on, it was found that two  observations were misread as…

A:

Q: The mean score on a set of 28 tests is 75. What is the sum of all the test​ scores?

A: The objective of this question is to find the sum of all the test scores given the mean score and…

Q: The mean of 14 numbers in a data set is 43. A new number is included in the data set. It changes the…

A:

Q: State the generic error for an interpolating formula?

A:

Q: A parent comes to you and asks the difference between percent correct and the national percentile…

A: Concept: Percentage in simple terms can be difined as a number that is out of 100. Maximum marks are…

Q: You are part of a 12-member team. The mean age of the team equals 44 years. Four new persons, who…

A: To determine the age of the four newly joined members of a 16-member team based on the given…