ather drops his three children off at the movie theater and give nd on a movie and concession snacks. After each of the children $9, what is the standard deviation of the amounts of money the

Q: The average exam score of a physics class is 75 points with a standard deviation of 3 points. Peter…

A: Given information Mean µ= 75 Standard deviation σ = 3 Peter’s score x = 72

Q: The standard deviation of the follo 10, 30, 50, 70, 90 а. 31.62 O b. 30.22 O c. 35.91 d. 32.09

A: We calculate by using excel

Q: The average salary for bank managers in a certain city is $91,900 pesos per hour with a standard…

A:

Q: Given Σ(x-μ)² = 78 and N= 80, then the standard deviation, a, is approximately a) 0.994 Ob) 0.110 c)…

A: We have to find the correct choice.

Q: he mean weight of baby deer and a local zoo is 15.8 pounds with a standard deviation of 2.4 pounds a…

A: a) Given values: 14.5, 16.8, 15, 16.4, 15.9. x=sum of data valuesnumber of data values…

Q: The amount of money seven people spent on prescription medication in a year are as follows: $600…

A:

Q: If the grades are normally distributed and 8 students received a B, how many students took the…

A: Let C denote the grades of students. Given that X follows N(mean = 82, SD = 5), then  Z = (X -…

Q: A) What percent of car sales amounts are between $11,700 and $18,900? B) 99.7% of all people paid…

A: For a normal distribution with mean μ and standard deviation σ, we have: P(x<=a) =…

Q: represents the number of televisions in a household: x 0 1 2 3 P(x) 0.050.200.450.30 Find the…

A:

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

A:

Q: The table on the right gives the annual income for eight families, in thousands of dollars. Find the…

A: Given that following data Family Income x A 49 B 51 C 46 D 48 E 47 F 48 G 45 H 50…

Q: "The weights of 1,000 children, in average, is 58kg with standard deviation of 18kg. Suppose the…

A:

Q: Q2. A population has a mean of μ= 30 and a standard deviation of σ= 5.  If every score in the…

A: Given,

Q: "The weights of 1,000 children, in average, is 62kg with standard deviation of 16kg. Suppose the…

A:

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given that,The middle 68% of the scores fall between 77 and 93.

Q: For an audience of 600 people attending a concert, the average time on the journey to the concert…

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

Q: "The weights of 1,000 children, in average, is 54kg with standard deviation of 17kg. Suppose the…

A:

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given information middle 68% of the scores fall between 76 and 88 As per empirical Rule 68% falls…

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: Solve for the mean and the standard deviation of the following normally distributed set of data. a.…

A: We have given that Standard deviation below mean is 6.7 and standard deviation above the mean is 9.9

Q: Which would you expect to be the larger standard deviation: a. The standard deviation of the weights…

A:

Q: If you flip a coin 100 times, the number of heads you will get is normally distributed (or very…

A: The answer would be we cannot coin flips with height, because everybody has a certain height, but…

Q: Five of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A: Average and standard deviation are measures of central tendency and variance respectively.

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given: The middle 68% of the scores are falling between 70 and 84.

Q: The Floppy Disk Company makes 3.5 inch floppy disks for disk drives that are 3.7 inches wide. The…

A: a) P(x<z) = 0.30 From table Z = -0.524 X = 3.5+(-0.524)×(0.1) X = 3.4476 inched --- B) P(x>z)…

Q: Grace has a dog and its weight is z = -0.5lbs.  Her current weight is 47 lbs.  The average weight…

A:

Q: "The weights of 1,000 children, in average, is 58kg with standard deviation of 18kg. Suppose the…

A: Solution-: Given: μ=58,σ=18,n=1000 We find, how many children weight between 48kg and 57kg?

Q: In an IT Certification Examination, the mean was 75 and the standard deviation was 5. If Pam z…

A: Let X be the examination score from normal distribution with mean (μ) = 75, standard deviation (σ) =…

Q: 4. Which of the following lists has the greatest standard deviation? a. 96 99 b. 2 100 101 103 4 6.…

A: For list a) x (x-x) (x-x)2 96 -3.8 14.44 99 -0.8 0.64 100 0.2 0.04 101 1.2 1.44 103 3.2…

Q: The weights of 1,000 children, in average, is 50kg with standard deviation of 19kg. Suppose the…

A: Given that,  Let X be the random variable from normal distribution with mean or average (μ) = 50kg,…

Q: Which of the following is a measure of the center of the data? the range the standard deviation the…

A:

Q: Based upon past flight data, the average weight of checked baggage was 44.5 pounds with a standard…

A: Given that  X~N( μ = 44.5 , ? = 3.6 ) μ = 44.5 , ? = 3.6 , n = 400 Z-score =( x - μ )/?

Q: A product has a mean demand of 50 with a standard deviation of 4. If the retailer wants to maintain…

A:

Q: Joey and Dee Dee bowled five games at the Rock 'n' Bowl Lanes. Their scores are given in the…

A:

Q: which has a mean of 350 and a standard deviation of 50. His brother Kyle takes the Regional…

A: Given for Nathan Population mean μ=350, standard deviation=50  For Kyle Population mean μ=300,…

Q: Use the table to answer ITEMS 6 - 12. f 2 3 4 7 2 9 5 10 1

A:

Q: The following are the test scores of Janelle in all of her subjects. English - 45 Math - 42 Science…

A: Mean: For a set of n observations, x1, x2, ... , xn, mean is given by, Variance: For a set of n…

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: For the values 2, 4, 6 the standard deviation is O 1.36

A: Given: The values are: 2, 4, 6       To find: Standard Deviation = ?

Q: "The weights of 1,000 children, in average, is 45kg with standard deviation of 18kg. Suppose the…

A: Given : No. of children (N) = 1000 The weights of children are  normally distributed with mean 45kg…

Q: Which of the following stocks is riskier if you are considering investing in X or Y only? Stock…

A: Given Stock standard deviation coefficient of variation X 40% 2 Y 40% 4 We know that,…

Q: Imagine you measured the temperature (in F) each day in a week and got the following measurements:…

A: Given the the temperature (in F) each day in a week as 70 72 68 50 90 80 72

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: The random variable score X is normally distributed and middle 68% of values fall between 71 and 83…

Q: Covert the following scores to z-scores if the mean is 50 and the standard deviation is 10: a. 76 b.…

A:

Q: A farm hatches chicken eggs in batches of 15 and there is a 3% infertile rate. Find the standard…

A: Obtain the standard deviation for the number of infertile eggs per batch.   The standard deviation…

Q: ind the z-score for the value 89, when the mean is 55 and the standard deviation is 4. A 7-8 25

A:

Q: Decide if each of the following statement is True or False. If all the scores in a data set are the…

A: If all the score in data set are the same,the standard deviation is equal to 1.00 False correct…

Q: Find the standard deviation of -2, 7.2, 6.9, -10.4, 5.3. O a. 6 O b. 7 O C. 6.78 d. 6.9 O

A: Data given -2,7.2,6.9,-10.4,5.3

Q: The mean of an examination is 69, the median is 68, the mod is 67, and the standard deviation is 3.…

A: We have to find measure of variation.

Q: A firm makes MP3 players. The research department at this firm found that the life of the MP3…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.