Given:
95% confidence level
sample size (n) = 91
Find: the lower and upper critical values in a chi-square distribution
Solution:
1. Calculate the degrees of freedom. Since the number of rows and columns is not specified in the question, we will subtract 1 from the sample size.
Our degrees of freedom (df) = 90.
2. Since this is two-tailed, subtract 0.95 from 1, then divide the result by 2.
3. Let's now look at the chi-square distribution table and look for df = 90 with a probability of 0.025 on both the left and right tails.
Based on the table, the lower critical value is 65.647 while the upper critical value is 118.136.
Hence, the answer is Option B.
The total bill including tip is $39.6. Christopher has breakfast at a cafe and the cost of his meal is $36.00. Because of the service, he wants to leave a 10% tip.
The rule associated with moving decimal places, and multiplying by a value or multiple of 10, would be the following :
If you divide a value by 10 or a multiple of 10, you would move the decimal place to the left number of times as there are zeros in the multiple.
(Assuming that there are no zeros in the numerator value)
If you multiply by 10 multiple, then you would move the decimal to the right that many times as there are 0's in the value.
The solution would be that the decimal number is multiplied by 100.
Answer:
D. a line graph
Step-by-step explanation: