Question

In: Statistics and Probability

A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.

A grocery store is interested in how much money, on average, their customers spend each visit in the produce department. Using their store records, they draw a sample of 1,000 visits and calculate each customer’s average spending on produce. Who is the population of interest?

Solutions

Expert Solution

A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.

We know that the population of interest is the population which is consulted for statistical study. Here as grocery store want to make inference about average money spend by customer in each visit in produce department, grocery store needs to consult customer who visit in produce department. Hence in example in hand, the population of interest is the grocery stores customer who visit in the produce department.


Related Solutions

Best Western Gift shop is interested to know how much money, on average, their customers spend...
Best Western Gift shop is interested to know how much money, on average, their customers spend each visit in the housewares department. They go back through their records and draw a sample of 1,000 and calculate each customer’s average spending on housewares. a) Identify the population, sample, parameter, statistic, variable and data for this example. b) Describe a situation in which you would calculate a parameter rather than a statistic. Best Western determined that each customer’s spending is normally distributed...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at the stores deli counter. A random sample of 45 customers was timed at the deli counter, and the average service time was found to be 5.75 minutes. Historically the standard deviation for waiting time is 1.75 minutes per customer.      a. Find the 95% confidence interval for the mean time that customers wait at the deli counter.      b. Is there sufficient evidence to...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at the stores deli counter. A random sample of 45 customers was timed at the deli counter, and the average service time was found to be 5.75 minutes. Historically the standard deviation for waiting time is 1.75 minutes per customer.      a. Find the 95% confidence interval for the mean time that customers wait at the deli counter.      b. Is there sufficient evidence to...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at the stores deli counter. A random sample of 45 customers was timed at the deli counter, and the average service time was found to be 5.75 minutes. Historically the standard deviation for waiting time is 1.75 minutes per customer. a. Find the 95% confidence interval for the mean time that customers wait at the deli counter. b. Is there sufficient evidence to indicate that...
LITTLE’S LAW: Diant grocery stores wish to estimate time customers spend, on average, in store and...
LITTLE’S LAW: Diant grocery stores wish to estimate time customers spend, on average, in store and in a checkout line. The results of the data collected are as below: Avg. rate of customers entering store = 300 cust/hr Avg. # of customers in store = 150 cust % of customers who do not make a purchase = 5% Avg. # customers in checkout lanes = 28.5 cust a) How much time does the average customer spend in the store? b)...
1. The produce manager for a local grocery store is interested in estimating the proportion of...
1. The produce manager for a local grocery store is interested in estimating the proportion of apples that arrive on a shipment with major bruises. The supplier claims the rate will be about 10%. a) The produce manager wants to estimate the true proportion of bruised apples to within ±2%, with 90% confidence. How many apples should he sample? b) A random sample of 150 apples showed 12 with major bruises. Conduct a full hypothesis test to see if this...
A major department store chain is interested in estimating the average amount its credit card customers...
A major department store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. 15 credit card accounts randomly sampled produced a mean of $50.50 and a standard deviation of $20. Find a 95% confidence interval for the average amount the credit card customers spent on their first visit to the chain's new supply store in the mall.
1 A small shop has investigated its customers to determine how much money they spend in...
1 A small shop has investigated its customers to determine how much money they spend in shop. The study revealed that the spending distribution is approximately normally distributed with a mean of OR 4.11 and standard deviation of OR 1.37. (i) What percentage of customers will spend less than OR 3.1 in the shop. (ii) What spending amount corresponds to the top 87th percentile? (iii) Suppose owner takes a random sample of 25 customers and record their spending. What is...
Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the...
Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the number of arrivals in a minute follows the Poisson distribution. Provide answers to the following to 3 decimal places. Part a) What is the probability that exactly two customers arrive in a minute? Part b) Find the probability that more than three customers arrive in a two-minute period. Part c) What is the probability that at least seven customers arrive in three minutes, given...
How much money does the average professional football spend on food at a single game?
How much money does the average professional football spend on food at a single game? That question was posed to 10 randomly selected football fans. The sample results provided a sample mean and a standard deviation of $19.00 and $2.55, respectively. Use this information to find the Error
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT