Answer:2 for both
Step-by-step explanation: because 4x3/5 is 2.4 converted to a fraction 2 4/10 simplified 2 2/5 the equal sign is telling you what it equals you do so and it's 2 2/5
2/1/4x = - 13/1/8
x = - 5/5/6
Read below-
Step-by-step explanation:
Expanded forms can be written like a sentence or stacked for readability as they are here.
Expanded Notation Form:
2,000
+ 600
+ 20
+ 5
Answer:
The 99% confidence interval of the population standard deviation is 1.7047 < σ < 7.485
Step-by-step explanation:
Confidence interval of standard deviation is given as follows;

s =
Where:
= Sample mean
s = Sample standard deviation
n = Sample size = 7
χ = Chi squared value at the given confidence level
= ∑x/n = (62 + 58 + 58 + 56 + 60 +53 + 58)/7 = 57.857
The sample standard deviation s =
= 2.854
The test statistic, derived through computation, = ±3.707
Which gives;


1.7047 < σ < 7.485
The 99% confidence interval of the population standard deviation = 1.7047 < σ < 7.485.