# In a survey of 500 U.S. adults

1. In a survey of 500 U.S. adults, 45% of them said that loungingat the beach was their “dream vacation.’ Assuming this to be asimple random sample of U.S. adults, the lower confidencelimit of the 95% confidence intervals for the proportionof U.S. adults who consider lounging at the beach to be their dreamvacation would equal to;

Answer:

Solution :

n = 500

= 45% = 0.45

1 –= 1 – 0.45 = 0.55

At 95% confidence level the z is ,

=1 – 95% = 1 – 0.95 = 0.05

/ 2 = 0.05 / 2 = 0.025

Z/2= Z0.025 = 1.960

Margin of error = E = Z/ 2 * $\sqrt$((* (1 – )) / n)

= 1.960 * ($\sqrt$((0.450* 0.550) / 500)

= 0.044

At 95% confidence interval estimate of the population meanis,

– E < < + E

(0.450 – 0.044 < < 0.450 + 0.044 )

0.406 < < 499

lower confidence limit = 0.406

upper confidence limit = 0.499

##### "Our Prices Start at \$11.99. As Our First Client, Use Coupon Code GET15 to claim 15% Discount This Month!!"

Calculate your order
Pages (275 words)
Standard price: \$0.00
Client Reviews
4.9
Sitejabber
4.6
Trustpilot
4.8
Our Guarantees
100% Confidentiality
Information about customers is confidential and never disclosed to third parties.
Original Writing
We complete all papers from scratch. You can get a plagiarism report.
Timely Delivery
No missed deadlines – 97% of assignments are completed in time.
Money Back
If you're confident that a writer didn't follow your order details, ask for a refund.

## Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
\$0.00
Power up Your Academic Success with the
Team of Professionals. We’ve Got Your Back.
Power up Your Study Success with Experts We’ve Got Your Back.