Substitution for {2x-3y=11 and -x + 2y = -6
1 answer:
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Complete Question:
a) Is it plausible that X is normally distributed?
b) For a random sample of 50 such pairs, what is the (approximate) probability that the sample mean courtship time is between 100 min and 125 min?
Answer:
a) It is plausible that X is normally distributed
b) probability that the sample mean courtship time is between 100 min and 125 min is 0.5269
Step-by-step explanation:
a)X denotes the courtship time for the scorpion flies which indicates that is a real - valued random variable, and since normal distribution is a continuous probability distribution for a real valued random variable, it is plausible that X is normally distributed.
b) Probability that the sample mean courtship time is between 100 min and 125 min
From the probability distribution table:
Answer:
Step-by-step explanation:
Step 1: Given equation:
To get u, by subtraction equality property subtract both sides of the equation by .
Step 2: By division equality property, divide both sides of the equation by t.
Therefore, .
So, in Emily’s physics class, she got .