Find the median wait time T. Find the mean wait time x.

Q: find out the mean profits:

A: We have to calculate the mean for given grouped frequency distribution of profits per shop.

Q: In a frequency distribution the coefficient of skewness based upon the quartile is 0.6. If the sum…

A: Skewness is used to measure the shape of the distribution. There are three types of skewness, they…

Q: For a given line of best fit, you compute that r=0 using n=50 data points. Can the line be used for…

A: From the given information, Correlation coefficient: Correlation coefficient is the measure of…

Q: Find the expected value for the monthly income

A: Expected value of a Random Variable is given by E(X) = ∑xxP(x)

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

A: C1 = 0.99P-z<p<z = 0.99∴ z = 2.576 ∵ z tableE = 1%  = 0.01  , here p =q = 0.5E = z×p1-pn

Q: The first three moments of a distribution about the value 2 are 1, 16 and-40 show that the mean is…

A:

Q: Alex works 15 hours per week. Find the lower bound of 95% prediction interval for Alex's grade.

A: From the provided information, The 95% prediction interval for Alex's grade is (-1.939517,…

Q: The mean waiting time for customers in a single line is minutes.

A: We have to find Mean and Median for each of the samples.   Single Line : 6.4, 6.6, 6.7, 6.8, 7.1,…

Q: Suppose duration of pregnancy has a mean of 266 days and a standard deviation of 16 days. Use…

A: (a)The proportion of pregnancies lasting between 250 days and 282 days is,

Q: Suppose that five people, including you and a friend, line up at random. Let X be the number of…

A: Let X be the number of people standing between you and your friend. Thus X takes value from 0 to 3.

Q: Find the mean and variance of S2(attached)

A: Expectation of S2:The expectation of S2 is obtained as follows:

Q: seeds per hectare

A: expected plant population= 81000/hectare

Q: A certain tennis player makes a successful serve 80% of the time. Suppose the tennis player serves…

A: Given : A certain tennis player makes a successful serve 80% of the time. assume that tennis player…

Q: Assume that IQ scores are normally distributed with μ = 100 and σ = 15 What percent of IQ scores…

A: The normal distribution is the most useful theoretical distribution for continuous variables.  For…

Q: Find the prob that the device does not faul before 17.6 days The gamma distribution with shape…

A: From the given information, the gamma distribution with shape parameter 5 and mean 11 of the time…

Q: mean score on stat finals for all Hartnell students is 78/10

A: Given that  The mean score on stat finals for all Hartnell students is 78/100   We know that…

Q: expected

A: Here given,  An Insurance company sells a 1-year term life insurance policy to an 76-year-old woman.…

Q: Investigate and explain about t- distribution and then provide 2 examples and solve it by using the…

A: A probability distribution for a particular random variable is function of values that maps the…

Q: Let X a b(4,) find Var(3x) and distribution function.

A:

Q: If x is normal with mean and variance, find

A: Given Data: X is random variable   X~ Normal (μ, σ2)

Q: Define P-value?

A:

Q: Because the leading digits of inter-arrival traffic times the distribution described by Benford's…

A:

Q: pose that Tom is graduating with a CGPA a starting salary (in thousand dollars). A 95% prediction…

A: The CGPA of Tom given is 3.5 . To calculate the starting salary (in thousand dollars) ,  Using the…

Q: What is the use of power curve?

A: The power curve is represented by 1-β where β stands to be the probability of committing type II…

Q: Determine degree of freedom, right tailed area, t-value

A: Hello! As you have posted 3 different questions, we are answering the first question. In case you…

Q: Let Xi be the allowance the boy gets in the ith week. Assuming a year has 52 weeks, what are the…

A: Let Xi be the allowance the boy get in the ith week. The urn contains 5 bills: #$1=4 and #$10=1 Let…

Q: The dot plot below shows the length of service in years of Generation Y employees of The Millennial…

A: a) From the given data n=16 Q3=3×(16+1)4th term=12.75th term=11.5   As there are 12 values less than…

Q: Pandora, the owner of a food delivery app, knows from experienc assemble a food delivery is normally…

A: Food delivery time is normally distributed with mean 30 and standard deviation is 5 μ=30σ=5

Q: Find the confidence limits for the mean if x= 84.

A:

Q: For an individual with a trust in government score of 3, what would their predicted Y be? (Do not…

A:

Q: Find the mean. Rounding rule for the mean: round to one more decimal place than the data as needed.…

A: Given: Total compensation, X 19.3 19.7 19.8 20 20.1 21.6 22.9 23.2 23.7 24…

Q: The first four moments of a distribution about the value 4 of the variable are-1.5, 17, -30 and 108.…

A:

Q: The weekly income for a taxi driver during the first three weeks of lock down were recorded as…

A: Given, The weekly income for a taxi driver during the first three weeks of lockdown was recorded as…

Q: The handle time of all calls in a call center is log-normally distributed. What can we say about the…

A: The mean median and mode of a log normal disribution is known as- Mean=eμ+12σ2Median=eμMode=eμ-σ2

Q: Find variance of Y1

A:

Q: The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the…

A:

Q: What is the statement of the Mean Value Theorem?

A:

Q: Use the table above to calculate the expected value.

A:

Q: An outlier

A: Outlier An outlier is an observation that lies an irregular distance from other values in a random…

Q: Based on this graph what is the approximate distribution of data?  X~___(___,___)

A: From the data given,we try to create the histogram of the data.

Q: The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the…

A: Given that  p =0.01 , n =4400

Q: The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the…

A: Introduction - If p^ is normally distributed  mean of p^=p Standard deviation of p^=pqn where ,…

Q: The Abendigo Division of Block C Enterprises has a product designed to operate for 1000 hours with a…

A: It is given that n =1000 and p =0.022.

Q: Assume that an adult fomale is randomly selected. Suppose females have pulse rates that are normally…

A:

Q: Suppose the relationship between Y and X is given by: Y = 30 - 25X + error  What is the expected…

A: Given : Y = 30 - 25X + error

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

A: It is given that Level of confidence = 99% Margin of error = 1%

Q: The mean is only slightly less than the distribution is left skewed. which suggests the is within…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: If you roll one six-sided die and X = the # on the die.   What is the mean value of X?

A: