Answer:
a: 0.9544 9 within 8 units)
b: 0.9940
Step-by-step explanation:
We have µ = 300 and σ = 40. The sample size, n = 100.
For the sample to be within 8 units of the population mean, we would have sample values of 292 and 308, so we want to find:
P(292 < x < 308).
We need to find the z-scores that correspond to these values using the given data. See attached photo 1 for the calculation of these scores.
We have P(292 < x < 308) = 0.9544
Next we want the probability of the sample mean to be within 11 units of the population mean, so we want the values from 289 to 311. We want to find
P(289 < x < 311)
We need to find the z-scores that correspond to these values. See photo 2 for the calculation of these scores.
We have P(289 < x < 311) = 0.9940
Either:
- He didn't measure from the end of the first paper strip to the end of the last.
- The paper strips were of different sizes
Answer:
The answer is 470
Step-by-step explanation:
371 round to 370
97 rounds to 100
370+100=470
ANSWER=470
Hello!
First you have to find the scale
32 / 4 = 8
To get the actual building you multiply the scale building by 8 and change the units to feet
8 * 8 = 64ft
The answer is 64ft
Hope this helps!