Answer:
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Step-by-step explanation:
There are different ways to estimate a variable. The sample mean is a point estimate of the population mean for the variable of interest.
<h3>What is a point estimate of the population mean?</h3>
A point estimate is known to be the value of a sample statistic that is often applied as one estimate of a specific population parameter.
The sample mean is defined simply as a form of average value seen in a sample. A sample is known to be the little portion of a whole.
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brainly.com/question/7597734
Answer:
0, 1, 2.
Step-by-step explanation:
5 - 3x <= 7
-3x <= 2
x >= -2/3 (the inequality sign flips as we are dividing by a negative value)
4x + 1 < 13
4x < 12
x < 3.
So the integer values satisfying the inequalities are>
0, 1, 2.
Answer:
a.) 0.1685
b.) 0.7922
Step-by-step explanation:
This question is solved by the probability distribution formula for selection which uses the combination formula to derive the answer.
If 7 out of 12 cases Of refrigerators are said to have compressor problem, then the success rate to be used in the probability distribution formula = p = 7/12 = 0.583
Probability of failure = q = 0.417
When choosing r samples from a possible n sample, then probability distribution formula is denoted by :
P(X=r) = nCr × p^n × q^n-r
a.) From possible 6 samples, if P(X=5)
P(X=5) = 6C5 × 0.583^5 × 0.417¹
P(X=5) = 0.1685
b.) P(X≤4) =1 -P(X>4) = 1 - P(X=5) - P(X=6)
P(X=5) as calculated earlier = 0.1685
P(X=6) = 6C6 × 0.583^6 × 0.417^0
P(X=6) = 0.0393.
Hence, P(X≤4) = 1- 0.1685 - 0.0393
P(X≤4) = 0.7922
Step-by-step explanation:
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