Simple random sample of size n=49 is obtained from a population with μ=76 and σ=28. ​(a) Describe the sampling distribution of x.
​(b) What is P x>81.8​?
​(c) What is P x≤67.8​?
​(d) What is P 70.8 ​(a) Choose the correct description of the shape of the sampling distribution of x.
A.
The distribution is skewed right.
B.
The distribution is uniform.
C.
The distribution is skewed left.
D.
The distribution is approximately normal.
E.
The shape of the distribution is unknown

(x, y)→(x − 8, y − 7)

step-by-step explanation:

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take it another

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x