3. The foreign service exam gives passing grade to only the top 10% of those taking the exam. The mean score is 84, with a standard deviation of 8. What should be the minimum passing grade?

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

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: 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: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: A test has a mean of 140 and a standard deviation of 27. What proportion of people have scores…

A:

Q: A data set has size of 40. How many observations lie within two standard deviations of either sides…

A: The 68-95-99.7% (Empirical) Rule: For a normal distribution, the empirical rule (68-95-99.7% Rule)…

Q: The tourist bureau of Cancún surveyed a sample of 5 United States tourists as they left to return…

A: We have given that,  The sample numbers are :- 12, 8, 10, 7, 8 Then,  We will find the standard…

Q: n a qualifying examination for admittance to the BS Psycholo the mean score was 75 and the standard…

A: Given that  mean =75 ,s.d = 8

Q: You want to estimate the mean number of friends for all Facebook users. How many users must be in…

A: Given data :  95% CI Standard deviation = 53 E = 7

Q: Given the set of data: (77, X. 75, 79, 79, X, 76, 75, X, 76}. If the unknown data X is the mode and…

A:

Q: What is the percentile rank for a student who scored 74 on a softball rules test if the class mean…

A:

Q: Which data set would be likely to have the larger standard deviation? Explain. * * Data set 1:…

A:

Q: A group of high school students was asked how many hours per week they thought would be reasonable…

A: Formulae : where , x is midpoint of class Midpoint = ( lower limit + upper limit)/2 f is frequency…

Q: From the states data set, get the descriptive statistics for the violent crime rate. For this…

A: given data

Q: Given the sample data {1, 1, 3, 4, 6}.Calculate the mean. Calculate the standard deviation.

A: Mean refers to the average of a data set. It is obtained by the formula x¯=∑xin, where ∑xi is the…

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Solution: Given  μ= 25 Pounds  Population meanσ= 3 Pounds Population standard deviations Assumed…

Q: The table below represents a frequency distribution of the heights in centimeters of all 50 members…

A: Given data: Height (cm) Frequency (f) 160≤x<170 12 170≤x<180 11 180≤x<190 6…

Q: The college board reports that in a recent year, the mean mathematics SAT score was 514, and the…

A:

Q: A mother is creating the family budget for next year and wants to come up with a single value to…

A: Identify the correct option that correctly describes the data.   The correct option is identified…

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

A: The data on highway mileage (mpg) for a sample of 8 different models of car company is given…