Answer:
0.9127
Step-by-step explanation:
We solve using this z score formula
z = (x-μ)/√n
where x is the raw score
We are told that:
The sample mean would differ from the population mean by less than 231 miles
μ is the population mean = 49360
Hence,
(x-μ) = 231 Miles
σ is the population standard deviation.
We were given variance = 6,568,969
Standard deviation = √variance
= √6,568,969
= 2563
n = random number of tires = 247 tires
z = 231/256/√247
z = 1.41648
Probability value from Z-Table:
P(x < 49591) = 0.92168
≈ 0.9217
The probability that the sample mean would differ from the population mean by less than 231 miles in a sample of 247 tires if the manager is correct is 0.9127
What three consecutive integers have a sum of 63? Which means that the first number is 20, the second number is 20 + 1 and the third number is 20 + 2. Therefore, three consecutive integers that add up to 63 are 20, 21, and 22.
Answer:
The answer is B,
26-12.81=13.19
13.19-10=3.19
3.19/0.42 is a little greater than 7
I am here again! The numbers you are looking for are 3 and 7.