Answer according to Swikness theorm. Thank you Illustration : The mean and standard deviation of a set of 100 observations were 40 and 5 respectively by a computer which by mistake took the value 50 in worked out as place of 40 for one observation. Find the correct mean and

Q: A biologist found the wingspans of a group of monary butterflies to be normally distributed with a…

A: X follows a Normal distribution with mean = 51.6 and S.D = 2.5 Then z=(x-mean)/SD = (x-51.6)/2.5…

Q: The lowest and the highest data value of a data set are 12 and 28 respectively, then the approximate…

A:

Q: Illustration : The mean and standard deviation of a set c 100 observations were 40 and 5 respective…

A: Mean is the average value of given observations. For a set of 'n' observations, mean is the sum of…

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

A: Given that ; X represents the number of adults in groups of five who reported sleepwalking P(x) is…

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

A: Given,

Q: The mean is μgirl(s). (Round to one decimal place as needed.) The standard deviation is a = girl(s).…

A:

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: The scores of a standardized test are normally distributed with a mean of 500 points and a standard…

A:

Q: An engineer claims that the average weights of their products is 750 grams with population standare…

A: As per guideline only First question to be attempted. please repost thhe other questions. Step 1…

Q: A quantity surveyor was asked to study the weight of beef in a particular company. He measured 10…

A:

Q: Tom scored a 125 on a measure of math ability and a 42 on a measure of verbal ability.The means and…

A:

Q: John wishes to estimate the population mean salary of college graduates who took a statistics course…

A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first question…

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: Bill scored 35 on a college algebra exam, where the mean was 25 and the Standard Deviation was 5.…

A: Given that the score for algebra exam is 35, mean is 25 and standard deviation is 5. z score for…

Q: The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they…

A: Let X denote the number of days spent on visit.  Given that n = 5

Q: If the coefficient of variation for a data is given as 35%, and the standard deviation for the same…

A: given data coefficient of variation = 35% so cv = 0.35 sd = 32 mean  = ?

Q: a math exam, Joel had a score of which was exactly 2 standard iations above the mean. The dard…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A pharmacologist measured the concentration of dopamine in the brains of several rats.The mean…

A: Mean = 1269 Standard deviation = 145

Q: CO LO Translate Mikayla and April began arguing about who did better on their tests, but they…

A: Solution The one who have a  higher  score did better.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A:

Q: Place the following in order to show how you find the standard deviation. Take the square root of…

A:

Q: The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles   What…

A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…

Q: USE THE INFORMATION BELOW TO ANSWER QUESTIONS 28 THRU 30 Although the average number of vehicles per…

A:

Q: In Statsville, there is a city-wide speed limit of 30 mph. If you are caught speeding, the fine is…

A: Let X be the random variable of drivers who were fined Given Data: E(X)=42 SD(X)=7   Let Y be the…

Q: а. How many of the women have a height that is within 1 standard deviation of the mean? b. How many…

A:

Q: If the population mean for women's heights is 66" with a population standard deviation of 3", what…

A:

Q: A population has a Mean of 100 and a standard deviation of 15.  A sample of 20 college students is…

A: Given information- Population mean, µ = 100 Sample mean, x-bar = 125 Population standard deviation,…

Q: The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they…

A: Standard deviation :

Q: John wishes to estimate the population standard deviation of salary of college graduates who took a…

A: Standard deviation is the positive square root of the mean of the squared deviations of given…

Q: On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70,…

A:

Q: The standard deviation of a sample was reported to be 4. The report indicated that (x-x)² = 336.…

A:

Q: Determine the class average if the standard deviation was 8% and Henry’s mark of 85% is equivalent…

A: Given that,  The standard deviation =8%, Marks of Henry's =85%, and z-score =1.30.

Q: The marks of six students in a science test are represented by the variable x. The following data…

A:

Q: A biologist found the wingspans of a group of monary butterflies to be normally distributed with a…

A: Solution: a. Let X be the wingspans of a group of monary butterflies. From the given information, X…

Q: A labor rights group wants to determine the mean salary of app-based drivers. If she knows that the…

A: For the given data Find n =?

Q: You are given that mean = 50, coefficient of variation = 40% and coefficient of skewness =-0.4. You…

A: Given,mean=50coefficient variation(CV)=40%coefficient of skewness=-0.4

Q: Sarah was told that she scored two standard deviations above the mean on her PSYCO 104 final exam.…

A: Solution: Given information: μ=65% Population mean σ=10% Population standard deviation  Sarah was…

Q: If some data is symmetrical and unimodal, and the mean and standard deviation are 230 and 40…

A: If the data is symmetrical and unimodal, then it is normally distributed with mean, μ=230 and…

Q: What's the population standard deviation s? Ơ= 4

A: We have given  Sample mean =18 Sample variance s2=16

Q: This list of test scores has a mean of 50. Estimate whether the standard deviation is closest to 0,…

A: To find the standard deviation, we use the following formula: where,  σ = Population standard…

Q: Given the following scores of students in a test: 5,7,11,12,13,18 a) add 8 to each score then find…

A: Given that  The data are 5,7,11,12,13,18

Q: On a measure of​ anxiety, the mean is 83 and the standard deviation is 12. What are the Z scores for…

A: Given: Mean (M) = 83 Stndard deviation (SD) = 12 Formula:

Q: The mean IQ score for 1800 students is 90, with a standard deviation of 10. Assuming the scores have…

A:

Q: Use the fact that IQ score are normally-distributed with a meal of 100, standard deviation of 15 to…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

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: 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: The mean grade of  Adrian in the final examination in mathematics was 85 and the standard deviation…

A: Mean for mathematics = 85 Standard Deviation for mathematics = 7 Mean for science = 89 Standard…

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

A: Given data,   Mean=? Standard deviation =?