Mathematics, 01.04.2021 23:20 vardo13
Select the most appropriate response. In a random sample of 28 families, the average weekly food expense was $95.60 with a standard deviation of $22.50. Determine whether a normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of weekly food expenses is approximately normal. Question options: Cannot use normal distribution or t-distribution. Use a t-distribution. Use the normal distribution.
Answers: 3
Mathematics, 21.06.2019 14:00
Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey
Answers: 3
Mathematics, 21.06.2019 14:00
Pokój na planie w skali 1: 100 jest prostokątem i ma wymiary 5,2cmx4,4cm. jaką powierzchnię w m2 ma pokój? ile m bieżących wykładziny dywanowej o szerokości 5m trzeba kupić by wyłożyć cały pokój jednym kawałkiem przy minimalnych stratach ? ile zapłacimy za wykładzinę jeśli 1m2 kosztuje 30 zł ?
Answers: 1
Mathematics, 21.06.2019 16:40
What is the average rate of change for this function for the interval from x=2 to x=4 ?
Answers: 2
Mathematics, 21.06.2019 17:00
Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?
Answers: 1
Select the most appropriate response. In a random sample of 28 families, the average weekly food exp...
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