103 Answered Questions for the topic Mean

The table below shows the wages of employees at the Yacht Club.

a) Copy the table and complete the class centre column.Hourly Class Wage Centre. Frequency14-18 ... more

02/04/21

a) For the following data set:

7 9 2 5 4 11 1 4 40 Find: i) the range. ii) the interquartile range b) Which of the two measures calculated in part (a) is the best representation of the spread of this data? Give a... more

02/04/21

mean, median, mode and midrange

Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data and then​ (e) answer the given question.Listed below are the jersey numbers of 11 players randomly selected from the... more

02/03/21

The table below shows the ages of a class of 60 students enrolled in the HSC course at TAFE Digital.

Age Frequency18 1419 2520 1621 5Using the statistical mode on your calculator, find the population standarddeviation of these ages.

02/01/21

A sample of 12 students was asked how many hours they had studied the week before their final exam.

Their responses were as follows: 18 40 14 23 14 15 18 14 19 13 16 12A) Discuss the effect on the mean of removing the outlier from the given data.

02/01/21

A sample of 12 students was asked how many hours they had studied the week before their final exam.

Their responses were as follows: 18 40 14 23 14 15 18 14 19 13 16 12b) find effect on the mean of removing the outlier from the given data.

10/30/20

Normal Distribution

In a given word problem, it is customary that all values are given. In the case of a word problem with normal distribution, it is common that the values of the score, the mean, and the... more

How to solve questions regarding drawing cards from a standard deck of 52?

Mark draws one card from a standard deck of 52. He receives $ 0.50 for a heart, $ 0.65 for a jack and $ 0.85 for the jack of hearts. How much should he pay for one draw?This is how i attempted to... more
Mean Statistics

10/12/20

What is the mean?

In 2019 exams, only 2103 of the 7685 examinees passed. The passing is a weighted ave of 74, which is higher than the mean weighted ave of all examinees. What is the mean given that the weighted... more

10/08/20

What salary marks the start of the upper 20% ?

Given that the average monthly salary of nurses in the Philippines is 23,000php with a standard deviation of 1,000 php. What salary marks the start of the upper 20% ?

What is the proportion

It is estimated that the mean life span of concrete drill bits is 20 hours. Suppose a construction company purchases drill bits that have a lifespan that is approximately normally distributed with... more

08/13/20

Population mean

Jordan made 6 out of 11 free throws in his last basketball game. estimate the population mean that he will make his free throws

07/06/20

Mean of Test scores

the mean of normal distributed test score is 79 and the standard deviation is 5 if there are 242 test scores in the data sample how many of them were in the 84 to 94 range

Statistics with confidence intervals

A random sample of 80 college students was asked, “How many hours do you study each week?” After gathering the data, the sample has a mean of 14 hours and a standard deviation of 2.8 hours.... more

Intro to statistics

Suppose we want to estimate the average IQ score for the population of statistics students. What is the minimum number of statistics students that must be randomly selected for IQ tests if we want... more
Mean

05/26/20

a question about median and mean

Jose is participating in a 6-day cross-country biking challenge. He biked for 48, 54, 51, 69, and 64 miles on the first five days. How many miles does he need to bike on the last day so that his... more

what is the likelihood a pack of gummy bears will contain between 37 and 45 candies?

the number of pieces in a pack of gummy bears is normally distributed with a mean of 35 and a standard deviation of 4. if a package is chosen at random what is the likelihood it will contain... more

what is katie's mark if she scored above the mean?

a teacher is analyzing the results for a test, the marks are normally distributed with a mean of 77.4 and a standard deviation of 4.2. determine katie's mark if she scores 2.5 standard deviations... more

Probability & Distribution question

Thank you so much!! I really want to master this unit :(

02/22/20

CRAUDQL3 6.1.022.

An auto dealer’s sales numbers are shown in the table below. Find for each month the mean, median, and mode prices of the cars she sold. Round your answers to the nearest dollar.Price. ... more

Generate random numbers within a range with pre-defined sum

What if I want to generate random numbers within a range with a fixed sum?? For example: I want to generate 50 numbers between 50 - 100 but with a fixed sum of 4650 so that I would produce a mean... more

How to generate random numbers with specific mean

Is there any formula that I can understand which will allow me to generate random numbers with a specific mean. I'm using java. Thanks

07/15/19

Statistics question

For a population with a standard deviation of σ = 4, what is the z-score corresponding to a score that is 6 points below the mean?

Math Question on scores

The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. Find the score that is 1 and one half standard deviations above the mean.

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