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qwelly
4 days ago
10

To be able to say with 95% confidence level that the standard deviation of a data set is within 10% of the population's standard

deviation, the number of observations within the data set must be greater than or equal to what quantity?
Mathematics
1 answer:
tester [8.8K]4 days ago
8 0
The answer to this query is 97.
0.20 SD = 1.96 SD / sqrt(n)
n = (1.96 /.200)^2
n = 96.04
This rounds up to 97
The number of samples in the data set must be at least 97.
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A plane ticket barcelona costs £175 the price decreases by 6% work out the new price
Svet_ta [9500]

Answer: £164.50

Reducing 175 by 6% results in 164.5.

The absolute change is:

164.5 - 175 = -10.5

Step-by-step explanation:

The calculation is as follows:

175 - Percentage decrease =

175 - (6% × 175) =

175 - 6% of 175 =

(1 - 0.06) × 175 =

0.94 × 175 =

94 ÷ 100 × 175 =

94 × 175 divided by 100 =

16,450 ÷ 100 =

164.5

So, the final amount is £164.50

6 0
24 days ago
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babunello [8412]

Response:

1. Closure

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Detailed explanation:

In this scenario, we are examining the properties that each equation demonstrates.

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The third equation also shows the closure property. Regardless of how we approach the addition for this equation, the outcome remains consistent.

The second equation displays the distributive property.

Each element within the parentheses is multiplied by the negative sign before we proceed with further calculations.

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