Answer:
B
Step-by-step explanation:
The probability of obtaining a 3 is
P(3) =
Then after 30 spins the predicted number of times it should land on 3 is
30 × = 5
A figure has a vertex at (5,2). If the figure has line symmetry about the x axis, what are the coordinates of another vertex of
1 answer:
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<h2>Answer with explanation:</h2>
Let be the population mean.
For the given claim , we have
Null hypothesis :
Alternative hypothesis :
Since alternative hypothesis is two-tailed , so the test is a two-tailed test.
Given : Sample size : n=220 ;
Sample mean: ;
Standard deviation:
Test statistic for population mean:
By using the standard normal distribution table of z , we have
P-value ( two tailed test ) :
Since , the P-value is greater than the significance level of , it means we do not have sufficient evidence to reject the null hypothesis.