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2. A random variable of 25 packs of powdered milk showed a mean content of 237 grams with a standard deviation of 8.56 grams while a sample of 20 packs of another brand of powdered milk showed a mean content of 240 grams with a standard deviation of 9.75 grams. Using a 0.05 level of significance, is there significant difference in the mean content of the two brands of powdered milk? Assumed variances are equal

2. A random variable of 25 packs of powdered milk showed a mean content of 237 grams with a standard deviation of 8.56 grams while a sample of 20 packs of another brand of powdered milk showed a mean content of 240 grams with a standard deviation of 9.75 grams. Using a 0.05 level of significance, is there significant difference in the mean content of the two brands of powdered milk? Assumed variances are equal

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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2. A random variable of 25 packs of powdered milk showed a mean content of 237 grams with a standard deviation of 8.56 grams while a sample of 20 packs of another brand of powdered milk showed a mean content of 240 grams with a standard deviation of 9.75 grams. Using a 0.05 level of significance, is there significant difference in the mean content of the two brands of powdered milk? Assumed variances are equal.
Transcribed Image Text:2. A random variable of 25 packs of powdered milk showed a mean content of 237 grams with a standard deviation of 8.56 grams while a sample of 20 packs of another brand of powdered milk showed a mean content of 240 grams with a standard deviation of 9.75 grams. Using a 0.05 level of significance, is there significant difference in the mean content of the two brands of powdered milk? Assumed variances are equal.
3. A survey from 50 stores found that the average price of a moisturizing soap is P88.42 and the average price of whitening soap is P80.61. Assume that the standard deviations are P5.62 and P4.83 respectively. At a=0.05, can it be concluded that there is a significant difference in the prices?
Transcribed Image Text:3. A survey from 50 stores found that the average price of a moisturizing soap is P88.42 and the average price of whitening soap is P80.61. Assume that the standard deviations are P5.62 and P4.83 respectively. At a=0.05, can it be concluded that there is a significant difference in the prices?
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