In a survey, 26 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $6. Find the margin of error at a 98% confidence level. Give your answer to two decimal places.________

Q: If a die is rolled one time, what is the probabilities of each outcome: a. getting a number greater...

A: GivenA die is rolled one timethen the outcomes are{1,2,3,4,5,6}Total no.of outcomes = 6

Q: An instructor of mathematics wishes to determine the relationship of grades on a final examination t...

A:

Q: Let X1,.. X„ be n independent random variables with PDF fx, (x) = - [A,e- if x > 0, i = 1,2, ..., n....

A:

Q: A researcher studying reaction time of drivers states that, "A 95% confidence interval for the mean ...

A: Givena 95% confidence interval for the meantime it takes for driver to apply the brakes after seeing...

Q: Below is bivariate data on vintage dresser auctions, where X is the year of construction of the dres...

A: For the given data Find Correlation ,regression line

Q: Question 1 Chief of Police Mark Shields wants to determine whether there is a difference in the mean...

A: For the given data Find ( i ) sst,sse and sstotal = ? ( ii ) mst =? mse =? ( iii ) F =?

Q: A random sample of 50 four-year-old attending day care centres provided a yearly tuition average of ...

A:

Q: Match the correct critical values for the t, and chi-square and tolerance interval factor - v x2 0.0...

A: as per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other ...

Q: Two salesmen A and B are working in a certain district. From a sample survey conducted by the head o...

A:

Q: Use the empirical distribution function interpolation method to compute the 100 percentile for the f...

A: First we arrange the data in ascending order so it would be easy to get 100th percentile, Data in as...

Q: 17) A shipment of twelve smartphones contains seven with cracked screens. If 18) A small pond contai...

A: Given that, 17. A shipment of twelve smartphones contains seven with cracked screens. If sold in a r...

Q: Directions: Choose ONE from the given situations below. Based on the situation you chose, write your...

A: Question: Directions: Choose ONE from the given situations below. Based on the situation you chose, ...

Q: Given the following data: 10 6. 15 3. 7. 4. 8 11 15 8 8 Obtain the two regression equations and calc...

A: Solution-: We have following data: X Y 5 8 3 6 7 8 4 5 8 9 2 6 10 8 6 5 8 11 ...

Q: (b) Find the probability that a student participates in less than three actjvities. The probability ...

A:

Q: The following are observations on the number of monthly Zoom sessions attended by a sample of 10 stu...

A: Standard deviation is a measure of dispersion and important measure of dispersion. It used to measur...

Q: Lee is a hospital Nurse in Colombo and in 2000 she had yearly salary of $60,000. In 2010 she earned ...

A: Given data Lee is a hospital Nurse In Colombo and In 2000 she had yearly salary of $60,000.  In 2010...

Q: High blood pressure: A national survey reported that 34% of adults in a certain country have hyperte...

A: From the provided information, A national survey reported that 34% of adults in a certain country ha...

Q: Let X be a discrete random variable and let Mx(t) be its moment-generating function. Rx(t) = In(Mx(t...

A:

Q: nple 29. Calculate the arithmetic mean and standard deviation from the following data : Value Freque...

A:

Q: Mustapha wants to know which radio station Ottawa teenagers think is the best. Mustapha's frienc Cur...

A:

Q: Take a guess: A student takes a multiple-choice test that has 11 questions. Each question has five c...

A: Givenn=11p=15q=1-pq=1-15=45A random variable X~Bionomial(n=11 , p=15)P(X=x)=11x15x4511-x  ;   x=0,1,...

Q: a) What if the person violates all 7 rules? b) What if the person never drinks alcohol and always ha...

A: Here use combination 

Q: 6. What is the residual e for the observation (1, y1) = (9,1.558)? 7. What is the conclusion for the...

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

Q: Four different designs for digital computers circuit are being studied to compare the average amount...

A: Given: Output of ANOVA Table MSE=73.20N=20k=4α=0.05

Q: Find the equation of the tangent plane to the surface z =e/ In (2y) at the point (2, 4,1.643). Note:...

A:

Q: Repeated measures study with a total n=24, and a sample mean difference score of MD=4 is obtained. I...

A: It is given that Sample size n = 24 Mean difference MD = 4 Variance of differences s2 = 216

Q: 2. A line has equation y=r-0.5 a. Pick five distinct x-values, use the equation to compute the corre...

A:

Q: A binomial experiment has the given number of trials n and the given success probability p. n=8, p=0...

A:

Q: Twenty years ago, Juan Medina and Bertha Zenith got married. The Medina-Zenith family's biggest life...

A: P(Having a boy) = 1/2, P(Having a girl) = 1/2 P(Having atleast one Girl) = 1 - P(Having no girl) P(H...

Q: The length of time (in seconds) that a user views a page on a Web site before moving to another page...

A:

Q: 4.17 The length of time required by students to complete a one-hour exam is a random variable with a...

A: Given that ;  A probability density function is given. By using the  properties of continues random ...

Q: Let X1, X2, . . . , X9 be a random sample from a continuous population with population median x0.5....

A:

Q: (a) A daily sample of 30 items was taken over a period of 14 days in order to establish control limi...

A:

Q: Words:O QUESTION 3 In a consumer reports article, the magazine reported that 207 of 316 chicken brea...

A:

Q: Advertisement ($'000)   Sales ($'000) 1068    4489 1026    5611 767      3290 885      4113 115...

A:

Q: A minority representation group accuses a major bank of racial discrimination in its recent hires fo...

A: Sample size (n) = 900 Population mean (p) = 0.10

Q: Suppose X - N(u, a²) where o is known. Let X1, X2, ...X„ be a random sample of size n. Prove that u ...

A:

Q: X ev An investigator has reported the data tabulated below. It is known that such data can be modele...

A: Solution:

Q: Energy consumption: The following table presents the average annual energy expenditures (in dollars)...

A: Given:

Q: Foot temperatures: Foot ulcers are a common problem for people with diabetes. Higher skin temperatur...

A: Left foot (X)   :- 85, 89, 78, 87, 80, 80, 81, 86 Right foot (Y) :- 85, 86, 78, 82, 81, 80, 83, 85 T...

Q: 500 elementary school boys and girls are asked which is their favorite color, blue, green or pink Re...

A: Chi square is used to measure the relationship between the two categorical variable. The degree of f...

Q: 87 85 56 75 34 96 54 74 52 65 78 90 93 15 72 45 87 64 34 - 57 65 74 85 64 98 67 81 a. Determine an a...

A: A range is the difference between the maximum value and minimum value of a dataset. It helps us dete...

Q: 5. Suppose there are n trials in a binomial experiment, but 0 is unknown. Let X be the random variab...

A: c) From the given information, EX=nθVX=nθ1-θ Consider, EXn=1nEX            =1n*nθ            =θ  

Q: A manufacturing reinforcing steel company presented a sample data shown in the followi Table regardi...

A: Given data420,440,460,480,500,520Calculate the standard deviation(s) ?

Q: An electronic circuit consists of 5 silicon transistors, 3 silicon diodes, 10 compo- sition resistor...

A:

Q: Find out the variance of the following series : Income No. of Persons More than 1000 50 More than 90...

A:

Q: An article in Fire Technology investigated two different foam expanding agents that can be used in t...

A: For the given data Find 95% C.I  for sigma1^2/sigma2^2

Q: 15 marbles are drawn without replacement from a jar that contains 20 red marbles, 26 white marbles, ...

A: Formula : E(X) = m*n/N

Q: The continuous random variable, X, has the probablity density function given below. nx for 0 < x < 1...

A:

Q: B B' Total A 96 40 A' 69 45 Total 1. Sum the column and the row totals 2. wha...

A: We have,   B B' Total A 96 40   A' 69 45   Total