Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Calculating the confidence Interval using the given data.

1.A random sample of 100 stores from a large chain of 1,000 garden supply stores was selected to determine the average number of lawnmowers sold at an end-of-season clearance sale.  The sample results indicated an average of 6 and a standard deviation of 2 lawnmowers sold.  Find out the 95 percent confidence interval for the true population mean.  Can we conclude that of all possible samples of 100 stores taken from the population of 1,000 stores, 95 percent of the confidence interval will contain the true population mean within the interval?  Justify your answer.

2. A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For a two-tailed test of hypothesis (.01 significance level) to conclude if there is a difference in the population means, the degrees of freedom are

a)    18

b)   17

c)    16

d)   None of the above

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920621

Have any Question? 


Related Questions in Statistics and Probability

Instructions 1 this assignment is a group assignment you

Instructions 1. This assignment is a group assignment. You are required to work in groups of 2-3 students per group. Groups will be decided by your lecturer. 2. Refer to the data that corresponds to your campus and group ...

Suppose hxz is the probability-generating function of some

Suppose H X (z) is the probability-generating function of some random variable X with PMF P X  (k ). In terms of P X  (k ), find the PMF of the random variable Y if its probability-generating function is given as in each ...

Company a manufactures computer applications boards they

Company A manufactures computer applications boards. They are concerned with the mean time before failures (MTBF), which they regularly measure. Denote the sample MTBF as Determine the number of failures that must be mea ...

A balanced coin is tossed nine times find the probabilities

A balanced coin is tossed nine times. Find the probabilities of each of the following events: (a) exactly 3 heads occurred; (b) at least 3 heads occurred; (c) at least 3 heads and at least 2 tails occurred.

Let xn be the sum of independent rolls of a fair cubicle

Let X[n] be the sum of independent rolls of a fair (cubicle) die. (a) Is X[n]a Markov chain? (b) Define a new process according to  That is for a non-negative integer q. Find the transition probability matrix for the pro ...

Why do we use n- 1 in the denominator for computing s but

Why do we use N- 1 in the denominator for computing s but use N in the denominator for determining σ?

I deal myself 13 cards for a standard 52-card deck find the

I deal myself 13 cards for a standard 52-card deck. Find the probabilities of each of the following events: (a) exactly one heart appears in my hand (of 13 cards); (b) at least 7 cards from a single suit appear in my han ...

In a game of blackjack the player and the dealer are both

In a game of blackjack, the player and the dealer are both dealt two cards. One of the dealer's cards is dealt face up so that the player gets to see it. Suppose you (as a player) are dealt a 10 and a 6 and you observe t ...

Two six-sided balanced dice are thrown find the

Two six-sided (balanced) dice are thrown. Find the probabilities of each of the following events: (a) only 2, 3, or 4 appear on both dice; (b) the value of the second roll subtracted from the value of the first roll is 2 ...

Question consider the market for soybeans in smallia the

Question: Consider the market for soybeans in Smallia. The market demand is given as P = 1000 – 2Q while the market supply is given as P = 200 + 6Q. Assume that the market for soybeans in Smallia is closed to internation ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate