A grocery store manager would like to have an idea concerning the average amount milk the...
A grocery store manager would like to have an idea concerning the average amount milk the store sells per day. In a sample of 76 days, the average amount number of gallons sold was 124 with a standard deviation of 24 gallons. What is the lower bound of the 95% confidence interval? (please express your answer using 2 decimal places)
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A grocery store manager would like to have an idea concerning
the average amount milk the...
A grocery store manager would like to have an idea concerning the average amount milk the...
A grocery store manager would like to have an idea concerning the average amount milk the store sells per day. In a sample of 77 days, the average amount number of gallons sold was 125 with a standard deviation of 24 gallons. What is the upper bound of the 95% confidence interval? (please express your answer using 2 decimal places)
Suppose that a grocery store buys milk for $2.10 and sells it for $2.60. If the...
Suppose that a grocery store buys milk for $2.10 and sells it for $2.60. If the milk gets old then the grocery store can sell their unsold milk back to their wholesaler for $0.60 (so the grocery store loses $1.50 on each gallon that it has to sell back to the wholesaler). Suppose that the demand for milk is normally distributed with a mean of 2,384 gallons per week and a standard deviation of 431 gallons per week. The grocery...
Suppose that a grocery store buys milk for $2.10 and sells it for $2.60. If the...
Suppose that a grocery store buys milk for $2.10 and sells it for $2.60. If the milk gets old then the grocery store can sell their unsold milk back to their wholesaler for $0.60 (so the grocery store loses $1.50 on each gallon that it has to sell back to the wholesaler). Suppose that the demand for milk is normally distributed with a mean of 2,055 gallons per week and a standard deviation of 481 gallons per week. The grocery...
A sociologist conducted a study at a local grocery store to determine how much money shoppers...
A sociologist conducted a study at a local grocery store to determine how much money shoppers spent on average. She sampled 27 shoppers and calculated the mean amount of money spent to be $95.5 with a standard deviation of $15.39. (5 points) Construct a 95% confidence interval for the mean amount of money spent at the grocery store. (2 points) Three months prior to this study, the manager of the grocery store started an advertising campaign with the goal of...
Here are some prices for randomly selected grocery items from the grocery store: Items Prices: Cheese...
Here are some prices for randomly selected grocery items from the grocery store: Items Prices: Cheese $3.29 Butter $4.99 Eggs $3.49 Yogurt $3.49 Juice $3.89 Tea $3.69 Chips $3.99 Soda $1.99 Pastry $2.99 Cerrial $4.99 Oats $3.29 Almond Milk $2.79 Almonds $4.39 Popcorn $3.29 Crackers $3.59 Ice Cream $6.99 Cookies $2.99 Jam $3.69 Peanut Butter $3.29 Coffee $3.19 Green Tea $4.99 BBQ Sauce $2.99 Oil $6.69 Mayonnaise $4.59 Mustard $2.99 1. Compute the sample mean x and the sample standard...
A grocery store manager must decide how to best present a limited supply of milk and cookies to its customers. Milk can...
A grocery store manager must decide how to best present a limited supply of milk and cookies to its customers. Milk can be sold by itself for a profit of $1.50 per gallon. Cookies can likewise be sold at a profit of $2.50 per dozen. To increase appeal to customers, one gallon of milk and a dozen cookies can be packaged together and sold for a profit of $3.00 per bundle. The manager has at most 100 gallons of milk...
The manager of a grocery store has taken a random sample of 100 customers. The average...
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customers to check out was 6.0 minutes. It is known that the standard deviation of the checkout time is 2.0 minutes. Refer to Exhibit 8-2. If the confidence coefficient is reduced to 0.90, the margin of error becomes negative will increase will decrease remains unchanged
The manager for a large grocery store chain would like to determine if a new cash...
The manager for a large grocery store chain would like to determine if a new cash register will enable cashiers to process a larger number of items on average than the cash register which they are currently using. Seven cashiers are randomly selected, and the number of grocery items which they can process in three minutes is measured for both the old cash register and the new cash register. Thus, for the same 7 cashiers, you get two data values...
The owner of a local supermarket wants to estimate the difference between the average number of...
The owner of a local supermarket wants to estimate the difference between the average number of gallons of milk sold per day on weekdays and weekends. The owner samples 24 weekdays and finds an average of 242.462 gallons of milk sold on those days with a standard deviation of 36.143. 28 Saturdays and Sundays are sampled and the average number of gallons sold is 335.717 with a standard deviation of 43.83. If a 95% confidence interval is calculated to estimate...
In a first grade class, 9 of 24 students drink white milk with their lunch. Find...
In a first grade class, 9 of 24 students drink white milk with their lunch. Find the 92% confidence interval for students drinking milk. In an elementary school, 7 of 100 students have a peanut allergy. Find the 95% confidence interval for peanut allergies in elementary school districts. The Bears have won an average of 7 games per year from 2010 to 2017 with a population standard deviation of 2.7255. For n = 16, find a 96% confidence interval for...
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customers to check out was 6.0 minutes. It is known that the standard deviation of the checkout time is 2.0 minutes. Refer to Exhibit 8-2. If the confidence coefficient is reduced to 0.90, the margin of error becomes negative will increase will decrease remains unchanged
The manager for a large grocery store chain would like to determine if a new cash register will enable cashiers to process a larger number of items on average than the cash register which they are currently using. Seven cashiers are randomly selected, and the number of grocery items which they can process in three minutes is measured for both the old cash register and the new cash register. Thus, for the same 7 cashiers, you get two data values...
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