The mean of 15 items was found to be 45. On rechecking, it was found that two items were wrongly taken as 12 and 18 instead of 32 and 28 respectively. Find the correct mean.

Q: The mean of 5 observations was 27. One number is deleted then the new mean is 25. Find that numb

A: The mean is the average or the most common value in a collection of numbers.

Q: tudent obtained the mean of 58 observations as 48. It was later found that one observation was…

A: Given data, n=58 The mean for 58 observations is 48 x=∑xn48=∑x58∑x=2784

Q: On a nationwide math test, the mean was 51 and the standard deviation was 4. If Roberto scored 70,…

A:

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given information:   Mean score on test Number of ninth graders Glenwood 80 272 Central city…

Q: Suppose that the mean score of a class of 33 students was 80. The 17 male students in the class had…

A:

Q: On a nationwide math test, the mean was 57 and the standard deviation was 10. If Roberto scored 80,…

A:

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: Suppose that 50 measurements were taken and the mean was calculated to be 4.55.  Assume next that…

A: Solution: From the given information, mean of 50 measurements is 4.55.

Q: Imagine a dataset with a mean of 60 and a median of 40, what does this tell you about skewness?

A: Given : mean = 60  median = 40

Q: The mean and SD calculated from 20 items are 15 and 10 respectively. If an additional observation 36…

A:

Q: If the mean of a list of numbers is 16.7 and the standard deviation is 0,

A: Mean is a measure of central tendency. It is one of the most important measures to find out around…

Q: On a nationwide math test, the mean was 69 and the standard deviation was 7. If Roberto scored 80,…

A: Given,mean (μ)=69standard deviation (σ)=7andRoberto score(X)=80

Q: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5

A:

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 mean grade of adrian in the final examination in mathematics was 85 and the standard deviation…

A: The mean of a dataset is computed by μ=∑xn, where ∑x is sum of observations and n is the total…

Q: The Taylors have recorded their weekly grocery expenses for the past 16 weeks and determined that…

A: Given The total number of weeks=16 Mean=$84.30 1 week's recorded expense is $48 but actual expense…

Q: On a final exam, the mean mark was 68% and the standard deviation was 12%. If John’s mark was 36%…

A: Given that on a final exam, the mean mark was 68% and the standard deviation was 12%. If John’s mark…

Q: A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from…

A:

Q: The mean score on a set of 15 tests is 75. Suppose two more students take the test and score 68 and…

A:

Q: Find the weighted mean for a particular student's scores on three exams if the first one was worth…

A: The weighted mean can be calculated as: Weighted mean = Sum of (weightage x score) / Sum of…

Q: The mean grade of Adrian in the standard deviation was 7. In Science, his mean grade was 89 and the…

A:

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 48, 15, 25 Round your…

A: We have to find the standard error of the mean.

Q: The Taylors have recorded their weekly grocery expenses for the past 16 weeks and determined that…

A:

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 14, 15, 25 Round your…

A: Given data: 45, 34, 65, 14, 15, 25 n = 6 To calculate: Compute the standard error of the mean

Q: On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90,…

A: Formula for z-score is

Q: a nationwide math test, the mean was 60 and the standard deviation was 7. If Roberto scored 85, what…

A: Given data,Mean μ=60sd    σ=7 If Roberto scored 85z-score=?

Q: On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what…

A: Given data,Mean μ=72sd      σ=7If John scored 75z-score=?

Q: Suppose that the mean score of a class of 35 students was 74. The 18 male students in the class had…

A:

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: The mean salary of twelve men is $57,000, and the mean salary of four women is $87,000. Find the…

A: The provided information are: Mean salary of 12 men = $57000 Mean salary of 4 women = $87,000 The…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: On the past mathematics test, the bottom 20% of students failed to pass the test. The mean for the…

A: The mean of the data is μ=55 and the standard deviation is σ=11 It is also given that 20% of…

Q: If on an average, 6 ships out of 10 arrive safely, find the Mean and the S.D of the number of ships…

A:

Q: In a certain test in Calculus, the mean score of a group of 100 students was 30 and the standard…

A: The mean for calculus is 30 and standard deviation is 8, the mean for physics is 52 and standard…

Q: For the month of April a checking account has a balance of $564 for 23 days, &2466 for 3 days, and…

A:

Q: In a survey, 18 people were asked how mue roughly bell-shaped with a mean of $30.2 would spend on…

A:

Q: If the mean is 8.35, and the standard deviation is 2.5, what will be the answer to this? How many…

A:

Q: Suppose that the mean score of a class of 28 students was 77. The 16 male students in the class had…

A: The mean score of the 28 students was 77. This means that on an average each student scored a total…

Q: Suppose that the mean score of a class of 34 students was 78. The 17 male students in the class had…

A: The mean score of class of 34 students was 78.

Q: n which test did she perform better?

A: Here use standard normal variable Z for comparison  Here mean and standard deviation is from 200…

Q: Suppose the mean miles per gallon for a sample of 70,000 new cars and light trucks sold in the…

A: The size of the sample  = 70000 new cars and light trucks

Q: The first blank for both questions is: "estimate of the standard ('distance' or 'score' or 'mean')"…

A: Blank 1: distance Blank 2: sample mean difference Blank 3: population mean difference

Q: A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics…

A:

Q: on a nationwide math test,the mean was 63 and the standard deviation was 7. if roberto scored…

A: According to the given information, we have Mean = 63 Standard deviation = 7

Q: The time is takes a studen to walk from the dorn to the chemistry lab follows roughly a Normal…

A: Mean(µ) = 20 Standard deviations (σ) = 3 X ~ N (µ, σ )= N ( 20, 3)

Q: 3. In the qualifying examination for the admittance to college, the mean score was 65 and the…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A successful basketball player has a height of 6 feet 4 ​inches, or 193 cm. Based on statistics from…

A:

Q: The mean of 7 consecutive integers is 10. What is the standard deviation?

A:

Q: Would it be reasonable to use the standard deviation formula?

A: here  According to a gallup survey of boys 77% of boys had played computer games in the past week…

Q: One common system for computing a grade point average​ (GPA) assigns 4 points to an​ A, 3 points to…

A: Given Data and calculation for GPA is shown below

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.