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Q: summarizing service times (seconds) of ood restaurant. How many individuals are mmary? Is it possibl...

A: Given that the summary times of dinners at a fast food restaurant. Time(sec) Frequency 60-119 7...

Q: 12-

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Q: In a normal distribution, a data value located 1.3 standard deviations below the mean has Standard S...

A: A Z-score gives the value which tells that how many standard deviations the data point is far from t...

Q: A tire manufacturer warranties its tires to last at least 20195 miles or “you get a new set of tires...

A: Given, μ = 26195 σ = 5130 (a) We need to compute P(X ≤20195). The corresponding z-value needed to be...

Q: Drive-thru Restaurant A C Order Accurate Order Not Accurate 320 35 D 121 17 278 233 55 30 two orders...

A:       Let A be the event that the orders are from restaurant D. No. of Favourable cases = Accurate o...

Q: QUESTION 5 Assume that A and B are events. The probability of event A is equal to 0.50 and the proba...

A: Form the give information, PA=0.50PB=0.60PA∩B=0.40 Thus, the required probabilities can be computed ...

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided ...

A:   The sample data is given as :        Gender     Use of Technology Male Female ...

Q: (a) 38% of customers at the snack counter of a movie theater buy soft drinks. Among those who buy so...

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want rem...

Q: The Carnegie Classification of Institutes of Higher Education categorizes colleges and universities ...

A: To test whether Carnegie classification is independent of the type of university. The hypothesis os ...

Q: The owner of a local restaurant with 7 employees made a table of values to show the correlation betw...

A: In this case, years of experience (x) is the independent variable and hourly wage (y) is the depende...

Q: Giving a test to a group of students, the grades and gender are summarized below A Total Male 16 14 ...

A: Given, There is a total n=96 students The number of male students who received a grade B in the test...

Q: Find the standard error of the mean for each situation (assuming a normal population). What happens ...

A:

Q: A sample consists of the following n=7 scores: 5, 0, 4, 5, 1, 2, and 4.  a. Compute the mean and sta...

A: Given: n=7 Sample = 5, 0, 4, 5, 1, 2, 4 (a) Let x be the mean of the sample, then Mean =  x=Sum of a...

Q: EPA fuel economy estimates for automobile models tested recently predicts a mean of 24 mpg and a sta...

A:

Q: You calculate a Cohen's d to determine the magnitude of the difference between two means. The result...

A: Given information- We have given the value of a Cohen's d. d = 0.42 We have to tell the effect on th...

Q: According to the National Association of Realtors, it took an average of three weeks to sell a home ...

A: Given data: Number of randomly selected homes sold in Greene county, n = 40. Sample mean, x¯=3.6 wee...

Q: Suppose researchers are interested in estimating the prevalence of HIV in a population of adolescent...

A: A) Given  p=9.4%=0.094 n=127 x=29 p^=xn  =29127   =0.2283 Conditions for approximation of normal: np...

Q: The following data gives the number of hours 1010 students spent studying and their corresponding gr...

A: Number of samples (n) = 10 x y x2 y2 xy 0 63 0 3969 0 0.5 72 0.25 5184 36 1 75 1 5625 75 ...

Q: the weights of adults living in the town of Metatuna is normally distributed, with a mean of 155 pou...

A: Let X denote the  weights of adults living in the town of Metatuna is normally distributed, with a m...

Q: You work for a soft-drink company in the quality control division.  You are interested in the standa...

A: Given sample is: 12.07, 12.18, 12.05, 12.1, 11.98, 12.07, 12.14, 11.98, 11.95, 12.02, 11.94, 12.02, ...

Q: The distribution of internalizing behavior as measured by the Child Behavior Checklist is normal wit...

A: It is given that the mean is 50 and the variance is 100.

Q: Can i get a step by step solution to this please. It is telling me to answer through margin of error...

A: Confidence interval is the type of estimation that is calculated from the observed dataset. `This in...

Q: A sample of n =25 means  has a variance of 36. What is the standard error for the sample means?   ...

A: Sample size, n = 25 Variance = 36 We know that, Standard deviation = VarianceStandard deviation =36=...

Q: The diameters of ball bearings are distributed normally. The mean diameter is 89 millimeters and the...

A: Mean = 89 Standard deviation = 4

Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 500 adu...

A: The sample proportion of the sample of size n can be defined as:  Here, X = Total number of success...

Q: Urgent and important question 1st

A: The hypotheses are given below: Null hypothesis: H0: Silicon chip sales are independent of XYZ count...

Q: Determine whether the given description corresponds to an observational study or an experiment. In a...

A: From the given information, a study of 395 girls with a particular disease, the subjects were inject...

Q: A brand manager for a soft drink firm is doing competitive analysis on marketing communications patt...

A: Probability means the chance of occurring a event. The value of probability lies between 0 to 1  

Q: Assume that human body temperatures are normally distributed with a mean of 98.20 degrees F and a st...

A: (a) Obtain the percentage of normal and healthy persons would be considered to have a fever. The per...

Q: The following stem-and leaf display of the dividend yields ($) for common stocks Stem-and-Leaf Displ...

A: Given that The following stem-and leaf display of the dividend yields ($) for common stocks Stem-and...

Q: 36​% of employees judge their peers by the cleanliness of their workspaces. You randomly select 8 em...

A: I will use excel formula "=BINOM.DIST(x, n, p, FALSE)" to find the probability.  

Q: 4. Testing a population mean - Formulating hypotheses and determining the type of test The term "El ...

A: State the hypotheses. There is, no evidence that the global mean temperature in the current year is...

Q: Statistics Question

A: From the pie chart,   Percentage Probability Never used 49.10% 0.491 Used, but not in the las...

Q: Given two events A,BA,B, we know that P(A)=0.6,P(A)=0.6, P(B)=0.4,P(B)=0.4, P(A∩B)=0.25.P(A∩B)=0.25....

A: From the given information, let A and B are the two events.

Q: An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An agricul...

A: Sampling distribution of a sample mean:

Q: Find P(A or B or C) for the given probabilities. P(A) = 0.31, P(B) = 0.22, P(C) = 0.17 P(A and B) = ...

A: P(A) = 0.31 P(B) = 0.22 P(C) = 0.17 P(A and B) = 0.13 P(A and C) = 0.04 P(B and C) = 0.08 P(A and B ...

Q: 16-

A: We have to find the probability that In a negative skewed distribution , z-score is less than 1 .  i...

Q: The weight of 2 month old babies is normally distributed with a mean of 12 pounds and a variance of ...

A: From the given information,  μ=12σ=9 a. The required percentage of weight more than Tina's weight wi...

Q: Given the accompanying sample data, use Excel’s formula options to find the 90% confidence interval ...

A: Given data is shown below and use the following formula to get the sample mean, z-test statistic and...

Q: 4. People don’t always answer surveys honestly! Suppose that the number of students at a school who ...

A: The event A is defined as the students at a school who really like the taste of canned peas, and  A¯...

Q: Some electronic devices are better used than new: The failure rate is higher when they are new than ...

A: Given: P (flaw) = 0.5320 All flawed dies within 6 months P (flawed and died)  =0.5320 P (died | not ...

Q: The Stanford-Binet Intelligence Scale is an intelligence test, which, like many other IQ tests, is s...

A: The margin of error is the range of values below and above the sample statistic in a confidence inte...

Q: From a lot of 13 ​missiles, 4 are selected at random and fired. Suppose the lot contains 3 defective...

A: From the provided information, In a lot of 13 missiles 3 are defective that will not fire. So, proba...

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.