Answer:
We conclude that the bowler's score is equal to 150 points.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 150
Sample mean, = 2 157
Sample size, n = 22
Alpha, α = 0.05
Population standard deviation, σ = 18
First, we design the null and the alternate hypothesis
We use Two-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
z-statistic lies within the range of acceptance region that is from -1.96 to 1.96, we fail to reject the null hypothesis and accept the null hypothesis.
Thus, bowler claims that her bowling score is not equal to 150 points is not true and we conclude that the bowler's score is equal to 150 points.
Answer:
Hello,
answer C
Step-by-step explanation:
Trapezium area = (1/2(a+ b))xh where a and b are the two parallel lengths and h is the height.
semi cirlce area= (pi x r'2)/ 2
Answer:
Step-by-step explanation:
We get a quotient when division operation is done.
r ÷ 12
Answer:
y = 2
Step-by-step explanation:
x = -2 Is two units to the left then go up two units where y = 2