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Refer to given problem. Suppose the car dealership's operation costs are well approximated by the square root of the number of cars sold, multiplied by $300. What is the expected daily cost of the operation? Explain.
ProblemAn automobile dealership records the number of cars sold each day. The data are used in calculating the following probability distribution of daily sales:
X
P(x)
0
0.1
1
2
0.2
3
4
0.3
5
a. Find the probability that the number of cars sold tomorrow will be between two and four (both inclusive).
b. Find the cumulative distribution function of the number of cars sold per day.
c. Show that P(x) is a probability distribution.
(i) Construct a stem and leaf plot of Fred's data. Comment on the shape of the plot. (ii) Calculate the mean and standard deviation of the data. What percentage of this data is within one standard deviation of the mean?
A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.
What is the formula is for a population with a mean of u=60 and a standard deviation of sigma=24. Find the z score corresponding to the sample m=63 for a sample of n =16 scores,.
a survey found that womens heights are normally distributed with mean 62.3 in. and standard deiation 2.3 in. the survey
Formulate an appropriate hypothesis test to examine at the 10% level of significance whether the manager's worries are justified.
You are a realtor with a small business. You use a simple 2 variable linear regression analysis for quick first glance house price estimates using square footage of the house.
Compare to a surface emission aperture with the same width, but a length of 35 µm. Which one do you expect to have less divergence and what is the beam shape in each case?
First, please review the five-step outline for a decision-oriented measurement problem. Think about how you might address each step in a project at your work (or any other real-world application).
Apply either the chi-square or the Kolmogorov- Smirnov test for normality to the data described in Exercise 14.85. At the 0.05 level of significance, could the data have come from a normal population?
1. ten employees at a company picnic are to stand in a row for a group photograph. in how many ways can this be done
Based on this information, calculate the interest charged by each card for this purchase and which card is the better deal and by how much
suppose that for he company produces independence day the company produces special bags containing 100 pieces of candy
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