Answer:
(-3+) /2, (3+
) / 2 which is approx -3.791 and 0.791
Step-by-step explanation:
i used the quadratic formula: [-b± sq rt (b² - 4ac) / 2a]
in this problem, a = 1, b = 3, and c = -3
What is the slope-intercept equation of the line below?
1 answer:
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Answer:
Step-by-step explanation:
Given: Sample size: n = 41
Sample mean degrees
Population standard deviation degrees
Confidence level (c) = 80% =0.80
Significance level (a) = 1- c = 1-0.80 = 0.20
z-score for 80% confidence level : z = 1.2816 [from z-table]
Confidence level for population mean :-
Hence, 80% confidence interval for the temperatures in the freezer