A professor wants to observe the time (in hours) students spent to study per day. A random sample of 25 students was taken from University A and 17 students from University B. The data was collected and the results as follows: University A ", = 25 n =17 F, = 1.10 I, =1.07 si = 0.015 s를 =0.017 University B The professor claims that students in University A spent more time to study. (i) Test for the professor's claim at 5% level of significance. Find a 90% confidence interval on the difference between average time University A's and University B's students spent to study. (ii) (iii) Interpret the answer in (ii), based on the claim made by the professor.
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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