A spinner used for a game is divided into 3 sections: yellow, green, and orange. Janie spins the spinner 20 times. The spinner l
2 answers:
Answer:
Step-by-step explanation:
Given : A spinner used for a game is divided into 3 sections: yellow, green, and orange.
Janie spins the spinner 20 times.
The spinner lands on green 8 times.
It means , the number of times it does not land on green section = 20-8=12
Then, the experimental probability that the spinner does NOT land on green :-
∴ Required probability =
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Answer:
0% probability of getting a mean temperature of 98.2 degrees F or lower.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation
, a large sample size can be approximated to a normal distribution with mean
and standard deviation
.
Normal probability distribution
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
Find the probability of getting a mean temperature of 98.2 degrees F or lower.
This is the pvalue of Z when X = 98.2. So
has a pvalue of 0.
So there is a 0% probability of getting a mean temperature of 98.2 degrees F or lower.