1. Use the t-distribution table to find t* for the following situations a. 98% confidence interval, n = 22 b. 95% confidence interval, n = 42
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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![Ch 8.3 Practice
Name:
1. Use the t-distribution table to find t* for the following situations
a. 98% confidence interval, n = 22
b. 95% confidence interval, n = 42
2. A random sample of 57 adults passed through a federally funded job training program.
After sixteen weeks, the 57 were found and their current weekly income was recorded. In
the sample, the mean weekly income was $412 with standard deviation $53. Calculate a 98%
confidence interval for the mean wage of all workers who have participated in this
particular training program.
a. Check that the conditions for inference have been met.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fee043644-8c82-4555-bd39-471becdabd6c%2Ff8fb1a58-84d8-4408-9d74-847622fa20b3%2Fzmtjt6_processed.png&w=3840&q=75)
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Procedure to find by using t -distribution table :
Step 1 : if n= sample size then degree of freedom = n-1
Step 2 : by using t -distribution table find at degree of freedom =n-1 and =level of significance i.e
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