William the researcher conducted a study on monitor size and reaction time. The research matrix is given below. 17 inch 19 inch 21 inch 25 participants 25 participants 25 participants If you wanted to give every participant in the study a piece of paper with the contact information of the researchers, how many pieces of paper will you need for this between subjects design?

225 p/p

Step-by-step explanation:

This design consists of 3 groups of participants, each with 25 members and three case studies, thus:

              case (1) 17 inch 25 members

              case (2) 18 inch 25 members

              case (3) 21 inch 25 members

Total:      case =  3           75 members

Total pieces of paper = 3*75 = 225 piece of paper

75

Step-by-step explanation:

25 x 3= 75 pieces of paper

sorry i need the points

step-by-step explanation:

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d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;