Question

In: Statistics and Probability

Your little brother just brought home his report card and his teacher indicated that he is...

  1. Your little brother just brought home his report card and his teacher indicated that he is struggling with his spelling. Your family looks into programs that will help him improve his spelling and request information from two different spelling programs. One program, SPELLbound, sends you information regarding the effectiveness of their program. You also receive information regarding the effectiveness of a new program on the market, Spelling Foundations. Both programs conducted stats on the pre-program and post-program performance, in the form of a t-test examining the number of errors made in 30 critical words contained in a passage. They have also provided the p values from their respective tests. The information you obtained is listed below.

SPELLbound                                     Spelling Foundations

n = 5000                                              n = 30

SD = 10                                               SD = 10

effect size = 0.10                                effect size = 0.80

p = .004                                               p = .031

  1. If your little brother made 15 errors (out of the 30 critical words) at pre-test, what would his number of errors be (out of 30 critical words) after the implementation of each program, assuming his improvements were typical or average (show your calculations)?
  2. Which program would you select for your little brother (assume the programs cost the same amount)? Explain your reasoning.

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

After getting trounced by your little brother in a children’s game, you suspect the die he...
After getting trounced by your little brother in a children’s game, you suspect the die he gave you to roll may be unfair. To check, you roll it 60 times, recording the number of times each face appears. Do these results cast doubt on the die’s fairness? a) If the die is fair, how many times would you expect each face to show? b) To see if these results are unusual, will you test goodness-of-fit, homogeneity, or independence? c) State...
Your brother and his wife just had a baby and they are wondering when their baby...
Your brother and his wife just had a baby and they are wondering when their baby will begin talking. They hope soon, and they have begun saying "mama" and "dada" to their baby. What can you tell them about the course of language development during the first year of life?
Your brother-in-law, Representative Howard Hughes, lost his bid for reelection. However, thanks to your efforts, he...
Your brother-in-law, Representative Howard Hughes, lost his bid for reelection. However, thanks to your efforts, he established himself while in Congress as an astute analyst of the health field and as a consequence, has taken a position as partner at the prestigious Atlanta investment firm of Keller, Keller, Keller, Keller, and Disher. You have decided to take him up on his offer to join him as a manager in the healthcare division. The other partners have little insight into healthcare...
On Tuesday morning, Reggie discovered his credit card was not in his wallet. He realized he...
On Tuesday morning, Reggie discovered his credit card was not in his wallet. He realized he had not used it since the previous Thursday when he’d bought groceries. He checked his online credit card account register and saw that some $1,700 had been charged around the county on his card. He immediately notified his credit union of the lost card and unauthorized charges. For how much is Reggie liable?
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend,...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John presented him with the following cost estimate per duck: Camper and equipment: Cost, $15,000; usable for eight seasons; 12 hunting trips per season $ 156 Travel expense (pickup truck): 100 miles at $0.39 per mile (gas, oil, and tires—$0.28 per mile; depreciation and insurance—$0.11 per mile) 39 Shotgun shells (two boxes...
Bill has just returned from a duck hunting trip. He has brought home eight ducks. Bill’s...
Bill has just returned from a duck hunting trip. He has brought home eight ducks. Bill’s friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John has presented him with the following cost estimate per duck:      Camper and equipment:    Cost, $1,200; usable for eight seasons; 10 hunting trips per season $ 120 Travel expense (pickup truck):     100 miles at $0.38 per mile (gas, oil, and tires—$0.26 per mile; depreciation and insurance     —$0.12 per...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend,...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John presented him with the following cost estimate per duck: Camper and equipment: Cost, $17,000; usable for eight seasons; 8 hunting trips per season $ 266 Travel expense (pickup truck): 100 miles at $0.42 per mile (gas, oil, and tires—$0.26 per mile; depreciation and insurance—$0.16 per mile) 42 Shotgun shells (two boxes...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend,...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John presented him with the following cost estimate per duck: Camper and equipment: Cost, $15,000; usable for eight seasons; 8 hunting trips per season $ 234 Travel expense (pickup truck): 100 miles at $0.40 per mile (gas, oil, and tires—$0.22 per mile; depreciation and insurance—$0.18 per mile) 40 Shotgun shells (two boxes...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend,...
Bill has just returned from a duck hunting trip. He brought home eight ducks. Bill’s friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John presented him with the following cost estimate per duck: Camper and equipment: Cost, $15,000; usable for eight seasons; 10 hunting trips per season $ 188 Travel expense (pickup truck): 100 miles at $0.46 per mile (gas, oil, and tires—$0.26 per mile; depreciation and insurance—$0.20 per mile) 46 Shotgun shells (two boxes...
Jason has decided to donate his kidney to his brother Matthew so that he can live....
Jason has decided to donate his kidney to his brother Matthew so that he can live. How would the psychoanalytic, social learning, and cognitive theorists explain his actions?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT