Skip to main content
You have samples of various sizes which you use to estimate a population mean. In the population, the true mean is 100 and the true standard deviation is 10. With which of the following sample sizes are you most likely to see an estimated mean of 135?
a) Sample size 2
b) Sample size 1
c) Sample size 10
d) Sample size 100

ANSWER

Given,
In the population,
the true mean = 100
the true standard deviation = 10.
With estimated mean of 135,
sample size can be 101,
almost nearer to,
d. Sample size 100
n = N*X / (N + X – 1),
where,
X = Zα/22 ­* σ2 / MOE2,
and Zα/2 is the critical value of the Normal distribution at α/2 (e.g. for a confidence level of 95%, α is 0.05 and the critical value is 1.96), MOE is the margin of error, σ2 is the population variance, and N is the population size. 

Comments

  1. https://www.chegg.com/homework-help/exercises-13-16-use-rectangular-coordinate-system-plot-image-chapter-1.8-problem-13e-solution-9780321982384-exc

    ReplyDelete
  2. https://www.chegg.com/homework-help/exercises-13-16-use-rectangular-coordinate-system-plot-image-chapter-1.8-problem-13e-solution-9780321982384-exc

    ReplyDelete

Post a Comment

Popular posts from this blog

Osmosis Data Sheet

Data Sheet: Activity - Osmosis Name Course Date Activity Data Code       Procedure I -Test Solution 1: Water Complete the tablesand questions below using your data and information found under the Background tab Data Table I Note: Difference in Final Volumes = Final Volume of Test Sol - Final Volume of Water Trial Starting Volume of Test Solution (L) Starting Volume of Water (L) Final Volume of Test Solution (L) Final Volume of Water (L) Difference in Final Volumes (L) 1 1.28 1.75 1.51 1.52 -0.01 2 1.28 2.00 1.64 1.64 0 Observations and Questions [1] Given that the final heights (and volumes) are the same for the water and test solution, what can you...

Pseudocode - painting a wall

My pseudocode from Module Two: Pseudocode – Painting a Wall MEASURE wall-length MEASURE wall width CALCULATE wall area DETERMINE amount of paint needed for wall-size PURCHASE desired paint and tools (brushes, rollers, pan, etc.) PREPARE work area and tools START painting wall END when painting is complete CLEAN work area and tools STORE tools and any leftover pa​‌‌‌‌‌‌‍‍‍‌‌‍‍‍‌‍‌‍‍​int
Simple Computer Science Questions Question 2 ANSWER Match the following a - 4 b - 10 c - 8 d - 6 e - 9 f - 1 g - 2 h - 7 i - 3 j - 5