Answer:
She is using a biased sample for her data collection
Explanation:
Juanita should have gone across different sections to collect her data in order to have a more representating sample but the samples she used is biased because she was generalizing her study based on only one dentist that she got to study her patient whereas the doctor has gotten some toothpaste from the company.
inflation is the general rise over time and reduction over time
Answer:
the first one is A the second one is C
Explanation:
Answer:
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Explanation:
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Answer: -0.81
Explanation:
A standard normal random variable simply refers to the normally distributed random variable which has a imean of 0 and also had a standard deviation that has the value of 1.
The standard normal variable can also be represented by the letter Z. For some value of Z, the probability that a standard normal variable is below Z is 0.2090. The value of Z is -0.81.
