Studies have been performed to estimate the percentage of U. S. asthmatics who are allergic to sulfites. In one survey, 38 of 500 randomly selected U. S. asthmatics were found to be allergic to sulfites. Construct a 95% confidence interval for the proportion of U. S. asthmatics that are allergic to sulfites. Round the endpoints to three decimal places.

The 95% confidence interval for the proportion of U.S. asthmatics that are allergic to sulfites

( 0.05281  , 0.0991)

Step-by-step explanation:

Step:-1

Given sample size is n=500

In one survey, 38 of 500 randomly selected U.S. asthmatics were found to be allergic to sulfites

Proportion of allergic to sulfites  =

q = 1-p = 1- 0.076 = 0.924

Step:-(ii)

The 95% confidence interval for the proportion of U.S. asthmatics that are allergic to sulfites

on calculation , we get

(0.076 - 0.02319 , 0.076 + 0.02319)

( 0.05281  , 0.0991)

Conclusion:-

The 95% confidence interval for the proportion of U.S. asthmatics that are allergic to sulfites

( 0.05281  , 0.0991)

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

related questions

ans789

step-by-step explanation: