Answer:
(a) 0.0128 to 4 decimal places
(b) The 90% confidence interval is 119.1 < μ < 121.0 to 1 decimal places
Step-by-step explanation:
See the attached documents and graphs. Cheers!
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The amount spent based on the information in the pie chart include:
Transportation = $187.50
Lunch = $375
Entertainment = $225
Others = $112.50
<h3>How to illustrate the information?</h3>
From the information, the following can be deduced:
Amount spent = $900
Transportation = 75°
Lunch = 150°
Entertainment = 90°
Therefore, Others will be:
= 360° - (150° + 75° + 90°)
= 360° - 315°
= 45°
Transportation = 75° = 75/360 × $900 = $187.50
Lunch = 150° = 150/360 × $900 = $375
Entertainment = 90° = 90/360 × $900 = $225
Others = 45° = 45/360 × $900 = $112.50
Learn more about pie chart on:
brainly.com/question/26851221
#SPJ1
Answer:
1.870828693387
Step-by-step explanation:
Standard Deviation, σ: 1.870828693387
Count, N:4
Sum, Σx: 12
Mean, μ: 3
Variance, σ2: 3.5
Steps
σ2 = Σ(xi - μ)2
N =
(6 - 3)2 + ... + (1 - 3)2
4 = 14
4 = 3.5
σ = √3.5
= 1.870828693387
Answer:
Step-by-step explanation:
7x - 1 + 3x - 9 = 180
10x - 10 = 180
10x = 190
x = 19
7(19) - 1 = 133 - 1 = 132
3(19) - 9 = 57 - 9 = 46
