A study of the time spent shopping in a supermarket for 20 specific items showed an approximately uniform distribution between 25 minutes and 35 minutes. a. What is the probability that the shopping time will be between 27 and 31 minutes? b. What is the probability that the shopping time will be less than 32 minutes? c. What are the mean and standard deviation of the shopping time? a. The probability that the shopping time will be between 27 and 31 minutes is. (Type an integer or a decimal.) b. The probability that the shopping time will be less than 32 minutes is. (Type an integer or a decimal.) c. The mean of the given uniform distribution is u=. (Type an integer or a decimal.) The standard deviation of the given uniform distribution is a = (Round to four decimal places as needed.)
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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