a. A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early ilers. Develop appropriate hypotheses such that rejection of Ho will support the researcher's contention. H0:4 is less than or equal to 1,071 Ha: u is less than 1,071 p. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $930. Based on prior experience a population standard deviation of o = $1,600 may be assumed. What is the p-value (to 4 decimals)?
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.
Individuals filing federal income tax returns prior to March 31 received an average refund of $1,071. Consider the population of "last-minute" filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15).
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