Answer:
Step-by-step explanation:
To compare different scores with different means and std deviation, we convert each score into equivalent Z score.
Then comparisons would be easier.
Z = is the conversion factor
a) a score of 38 on a test with a mean of 31 and a standard deviation of 5.8
Z score =
b) a score of 1124 on a test with a mean of 1080 and a standard deviation of 67.7
Z score = 0.65
c) a score of 4709 on a test with a mean of 3960 and a standard deviation of 557.1
Z score = 1.34
Hence we get highest relative score is
a score of 4709 on a test with a mean of 3960 and a standard deviation of 557.1
I don't think you can dance its 622 is not in the ten hundreds. I hope that helps!!
Answer:
a) 0.997 is the probability that the breaking strength is at least 772 newtons.
b) 0.974 is the probability that this material has a breaking strength of at least 772 but not more than 820
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 800 newtons
Standard Deviation, σ = 10 newtons
We are given that the distribution of breaking strength is a bell shaped distribution that is a normal distribution.
Formula:
a) P( breaking strength of at least 772 newtons)
Calculation the value from standard normal z table, we have,
0.997 is the probability that the breaking strength is at least 772 newtons.
b) P( breaking strength of at least 772 but not more than 820)
0.974 is the probability that this material has a breaking strength of at least 772 but not more than 820.
Answer:
8
Step-by-step explanation:
You just gotta divide 64 by 8