Answer:
The test statistic is -1.00
Step-by-step explanation:
Test statistic (Z) = (sample mean - population mean) ÷ sd/√n
sample mean = 38.8miles/gallon, population mean = 39miles/gallon, sd = 2.2miles/gallon, n = 120vans
Z = (38.8 - 39) ÷ 2.2/√120 = -0.2 ÷ 2.2/10.95 = -0.2 ÷ 0.20 = -1.00 (to 2 decimal places)
The answer is 26 :) because that way 26 and 26+4=30
<span> 1.4×10^5
--------------- = 0.286 x 10^2 = 28.6 = 29
</span><span> 4.9×10^3
answer
</span><span>29</span>
Answer: No the graph fails the vertical line test.
Step-by-step explanation:
