22 random samples were selected from a population that has a normal distribution the sample has a mean of 99 and a standard devi
2 answers:
Answer:
(96.91, 101.09)
Step-by-step explanation:
To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:
Where X is the mean and s is the standard deviation and x the sample size:
The interval is (96.91, 101.09)
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Answer:
Of the 600 elephants that he observes in random places in the reserve, he counts elephants with broken tusks.
Step-by-step explanation:
Let x denotes number of elephants having broken tusks out of 600 elephants.
Of the 30 elephants that he observes in random places in the reserve, he counts 8 elephants with broken tusks.
So,
Of the 1 elephants that he observes in random places in the reserve, he counts elephants with broken tusks.
Therefore,
Of the 600 elephants that he observes in random places in the reserve, he counts elephants with broken tusks.