A researcher is interested comparing quality of sleep between people who work overnight shifts and people who work day shifts. A sample of 50 day shift workers and 50 night shift workers are asked to complete a quality of sleep measure, which the researcher will treat as an interval scale measure. The researcher will compare the mean levels of each group to see if there is a statistically significant difference between the groups. Which analysis would be acceptable to use?

a. one-sample t-test
b. Independent samples t-test
c. Pearson's r
d. Paired-samples t-test

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5