McPhilly is conducting a study on the amount of money a customer spends on each visit to the restaurant.  The company looks at the receipts from 20 McPhilly restaurants.   The company found that the mean amount spent is $11 with a $3 standard deviation.  a. What type of sampling method was used?  b. What is the probability that a customer spend greater than $8 each visit? c. What is the probability that a customer spends less than $13 each visit?

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A: Note: Please repost part d as i can answer only 3 subparts as per my policy. Given data,μ=1252σ=129

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A: a)

Q: McPhilly is conducting a study on the amount of money a customer spends on each visit to the…

A: As per our guidelines we are supposed to answer only one question per post Given that, Mean (u) = 11…

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A:

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Q: Hila City typically has rain on about 16% of days in February. a. What is the probability that it…

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A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: The College Board reported the following mean scores for the three parts of the SAT (The World…

A:

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A:

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A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: c. What is the probability that exactly ten of the 45 luxury cars sold are silver? d. What is the…

A: It is given that n=45 and p=0.191.

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A: Let X is the gas mileage for a hybrid car. X~Normalμ=57,σ2=3.52

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.