The average time to run the 5K fun run is 21 minutes and the standard deviation is 2.4 minutes. 45 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X - N( 21 |2.4 b. What is the distribution of ? E - N( 21 0.3578 Σ c. What is the distribution of ? æ - N( 945 d. If one randomly selected runner is timed, find the probability that this runner's time will be between 20.7633 and 21.1633 minutes. 0.0664 16.0997 e. For the 45 runners, find the probability that their average time is between 20.7633 and 21.1633 minutor 0 4218
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.
Need help figuring out the last question on this problem. Thanks so much.
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