ite resistors is norma
lly distributed with
Mean ? = 4700
Standard Deviation ? = 250
Given a sample size of 100 randomly selected resistors
What is the probability that the samp
le average is between 4675 and 4725 ?
Q 2. A consumer product laboratory has been asked to de
termine the overall average
number of calories per
serving for a new dessert.
The consumer testing laboratory re
ported the following results:
Sample Size = 36 servings
Sample Mean = 175 calories
Sample Standard Deviation = 12 calories
Estimate the overall average number of calorie
s per serving for the new dessert product.
Use a 95% confidence interval.
Q 3. Based on a sample of measured values, estimate the ove
rall population mean (use a 95% confidence interval).
Sample Size = 16 servings
Sample Mean = 540 calories
Sample Standard Deviation = 80 calories
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