Question

Please ignore the circled answers. I am checking my results.


rajoey is chose b. randen, what's the probability ios wegsboe of these. done a) o bX. 121 e 2266 ) .1056 ) none of these b).121 ) 2266 .1056 none of these b)) less than 1% c) 5% d) 0% e) none ofthese 32. If 1 joey is chosen at random, what's the probubility that it weis esasctly s00 mg a) 0 33. If 10 joeys are chosen at random, how likely is it that they average between 450 and 470 mg

Answer 1

Answer Date: 15/01/2019 31) If 1 Joey is chosen at random, the probability is that weighs between 450 and 470 mgis, First, compute the mean and standard deviation for sample mean then find probability The mean ror sample meanis, 500 Standard deviation of the distributionof sample means is, 40 Vi 40

If 1 Joey is chosen at random, the probability is that weighs between 450 and 470 mgis, First, compute the zscore then find probability based on standard normal table. Forx -450 converts to .x 450 500 40 For 470 converts to g. 470- 500 40 --0.75 From the standard normal distribution table, the associated probability for z values and subtracts the probabilityis,

p (4505元 470-pC-1 .25s z -0.75) = p(25-075)-p(z -1.25) 0.2266-0.1057 = 0.1209~ 0.121 If 1 Joey is chosen at random, the probability is that weighs between 450 and 470 mg is 0.121 The answer is b. 32) If 1 Joey is chosen at random, the probability is that weighs exactly 500 mgis, First, compute the zscore then find probability based on standard normal table. For 500 converts to

500 500 40 0.00 From the standard nomal distribution table, the associated probability for the area to the left is shown below, p(z 0.00) 0.5000 If 1 Joey is chosen at random, the probability is that weighs exactly 500 mg is 0.5000. The answer is e 33) If 10 Joeys is chosen at random, the probability is that weighs between 450 and 470 mg 1S First, compute the mean and standard deviation for sample mean then find probability

The mean ror sample mean 1s, 500 Standard deviation ofthe distribution of sample means is, 40 10 12.65 If 10 Joeys is chosen at random, the probability is that weighs between 450 and 470 mg 1S First, compute the z score then find probability based on standard normal table. For x 450 converts to