Question

# I asked a random sample of 15 adults, aged 25 - 50, how many hours per...

I asked a random sample of 15 adults, aged 25 - 50, how many hours per week they spent playing video games. The responses were as follows:

7, 15, 3, 1, 2, 2, 0, 0, 10, 5, 1, 1, 2, 0, 2

With a mean of 3.4 and a standard deviation of 4.256, determine a 90% confidence interval.

We have given that,

Sample mean =3.4
Sample standard deviation =4.256
Sample size =15
Level of significance=1-0.90=0.1
Degree of freedom =14

t critical value is (by using t table)=   1.7613

Confidence interval formula is

=(1.46,5.34)

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• Emerald Co. uses a perpetual inventory system and records purchases of merchandise at net cost. The...
• Movie stars and U.S. presidents have fished Pyramid Lake. It is one of the best places...
• what advantages do percent distributions have over frequency distributions when comparing populations at different years?
• Richard has just been given a 6-question multiple-choice quiz in his history class. Each question has...
• Write about westernized elements in life; westernization in our life, and this includes Americanization.
• The college Physical Education Department offered an Advanced First Aid course last summer. The scores on...