Below is a frequency table showing the number of new restaurants opened in the city over the past 24 months. Compute the mean number of openings per month over this 24-month period. Openings (x) 0,1,2,3,4 Number of months f(x) 9 6 4 3 2
Below is a frequency table showing the number of new restaurants opened in the city over...
The number of arrivals per minute at a bank located in the central business district a. Compute the mean number of arrivals per minute of a large city was recorded over a period of 200 minutes with the results shown in the table below. Complete parts a and b to the right (Type an integer or a decimal) Frequency 24 52 41 b. Compute the standard deviation for the number of arrivals per minute (Round to three decimal places as...
The number of persons living per household in a city was collected and were summarized. The frequency table is given below: # people # households (millions 1 23 45 6 7 | 3.1 | 4.5 | 3.8 | 2.5 | 2.4 | 2.5 | 1.2 Define X as the number of people per household. (a) Write down the probability distribution of X. (b) Find P[X2 4] (c) Find P[2 S X< 4] (d) Find the mean, variance and standard deviation...
The following time series shows the number of units of a particular product sold over the past six months. a. Use = 0.2 to compute the exponential smoothing values for the time series, forecast the sales volume for month 7, and fill in the unknown spaces. Compute the number (i): Compute the number (ii): Compute the number (iii): What is the mean square error (MSE)? b. Consider the following 3-month moving average for the above time series and forecasting the...
The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes with the results shown in the table below. Complete parts a and b to the right. Arrivals Frequency 0 2222 1 3737 2 4242 3 3636 4 2828 5 2020 6 1010 7 44 8 11 a. Compute the mean number of arrivals per minute. μ= (Type an integer or a decimal. Do...
The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes, with the results shown in the table below. Complete (a) through (c) to the right. a. Compute the expected number of arrivals per minute. b. Compute the standard deviation. c. What is the probability that there will be fewer than 2 arrivals in a given minute?
A data set is summarized in the frequency table below. Using the table, determine the number of values less than or equal to 6. Give your answer as a single number. For example if you found the number of values was 14, you would enter 14. Value Frequency 1 5 2 3 3 2 4 3 5 4 6 3 7 8 8 3 9 7 10 8 11 3
1.15 The data shown in the table below is a four-year record of the number of "recordable" safety incidents occurring at a plant site each month 1 0 0 0 2 2 0 0 01 0 1 0 1 0 1 0 0 0 0 0 0 0 1 2 2 0 1 2 0 1 21 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 (i) Find the average number of safety incidents...
When a new floral shop opened, a record of the daily number of phone calls was kept. The records showed the following data. Number of calls per day Frequency Let the number of calls be the random variable X. Use this summary to determine the probability that the number of phone calls is 4 per day 1/30 1/15 1/10 3/10 7/15
An unfair die was rolled 120 times. Below is a frequency table for the number of times it landed on each value: Number Frequency 1 27 2 39 3 21 4 18 5 6 6 9 Determine the probability that the die will land on a number less than 3 if it is going to be rolled again.
1) a) The following distribution shows the number of cars sold each month by a garage over a period of 3 years: 8 9 10 11 12 13 14 15 Number of cars (x) Number of months (f) 1 4 5 8 5 4 5 4 State whether the variable measured is continuous or discrete and find the mode, the mean and the median. (6 marks) b) The weight (in kg) of 40 patients of the Berkshire Hospital are summarised...