A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.19 0.21 0.41 0.05 0.08 0.06 What is the standard deviation of complaints received per week?
A department store manager has monitored the number of complaints received per week about poor service....
A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.17 0.30 0.33 0.07 0.05 0.08 What is the mean of complaints received per week?
A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.16 0.26 0.35 0.10 0.08 0.05 What is the probability of between 3 and 5 (inclusive) complaints received per week? Please specify your answer in decimal terms and round your answer to the nearest hundredth (e.g.,...
A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.15 0.20 0.41 0.11 0.06 0.07 What is the mean of complaints received per week? Please round your answer to the nearest hundredth. Note that the correct answer will be evaluated based on the full-precision result...
A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.15 0.26 0.34 0.06 0.09 0.10 What is the probability of between 2 and 3 (inclusive) complaints received per week? Please specify your answer in decimal terms and round your answer to the nearest hundredth (e.g.,...
A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5 Probability 0.20 0.29 0.26 0.12 0.05 0.08 What is the probability of between 1 and 3 (inclusive) complaints received per week? Please specify your answer in decimal terms and round your answer to the nearest hundredth (e.g.,...
A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day 1 2 3 4 5 6 0.01 0.04 0.13 0.21 0.41 0.14 0.06 Probability Find the expected number of complaints per day The expected number of complaints per day is (Type an integer or a decimal. Do not round your answer.) A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day 1 2 3...
The number of complaints per day, X, received by a cable TV distributor has the probability distribution 2. 0 .4 .2 a) Find the expected number of complaints per day 0C6. 4)I(o.3)2 (0.1) 3( 0,2) b) Find the standard deviation of the number of complaints What is the approximate probability that the distributor receives a total of more than 100 complaints in 90 days? c)
The following table contains the number of complaints received in the department store for first 6 months of operation: Month Jan Feb Mar April May June Complaints 36 45 81 90 108 144 a. Calculate the forecast for the month from April through June using 3 month moving average? (3 points) b. What will be the forecast for the month of July using 3 month moving average? (3 points) c. If actual sales for the month of July turned out...
17) A store manager claims that the standard deviation of the number of customers per day is more than 8. A random sample of 51 days has a mean number of customers 498 with a standard deviation 8.2. Test the claim using a 0.05 level of significance.
The number of computers sold per day at a local computer store, along withits corresponding probabilities, is shown in the table. calculate the mean, variance and standard deviation of the probability distribution.