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3 years ago

What is 2,798 divided by 20

Mathematics

2 answers:

Sholpan [36]3 years ago

5 0

2798 divided by 20 equals 139.9

ANEK [815]3 years ago

4 0

139.9 would be the answer

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DeLuxe Cinema has a summer bundle: 3 tickets for $36.75. Regular price for 1 ticket is $11.75. If you need 3 tickets, which is t

Marianna [84]

Answer:

buying 3 of the regular price tickets

Step-by-step explanation:

if you multiply the regular price ticket 3 times, the total is 35.25 which is cheaper than the bundle

5 0

2 years ago

Teen obesity:

Law Incorporation [45]

Answer:

95% confidence interval for the percentage of all U.S. public high school students who are obese is [0.110 , 0.190].

Step-by-step explanation:

We are given that 15% of a random sample of 300 U.S. public high school students were obese.

Firstly, the pivotal quantity for 95% confidence interval for the population proportion is given by;

P.Q. = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample % of U.S. public high school students who were obese = 15%

n = sample of U.S. public high school students = 300

p = population percentage of all U.S. public high school students

Here for constructing 95% confidence interval we have used One-sample z proportion statistics.

So, 95% confidence interval for the population proportion, p is ;

P(-1.96 < N(0,1) < 1.96) = 0.95 {As the critical value of z at 2.5% level

of significance are -1.96 & 1.96}

P(-1.96 < $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ < 1.96) = 0.95

P( $-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ < ${\hat p-p}$ < $1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ) = 0.95

P( $\hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ < p < $\hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ) = 0.95

95% confidence interval for p = [ $\hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ , $\hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ]

= [ $0.15-1.96 \times {\sqrt{\frac{0.15(1-0.15)}{300} } }$ , $0.15+1.96 \times {\sqrt{\frac{0.15(1-0.15)}{300} } }$ ]

= [0.110 , 0.190]

Therefore, 95% confidence interval for the percentage of all U.S. public high school students who are obese is [0.110 , 0.190].

6 0

3 years ago

9x – 2y = 34 5x + 2y = -6

ipn [44]

Answer:

(2,-8)

Step-by-step explanation:

Meaning x=2 and y=-8

hope i helped

6 0

3 years ago

Leslie ran 4 3/4 km on Tuesday, 2 2/3 km on Thursday, and 2 1/6 km on Saturday. If she wants to run a total of 12 km each week,

Leto [7]

4 3/4 + 2 2/3 + 2 1/6 + x = 12
x = 2 5/12

7 0

3 years ago

Hey umm i cant find what is d/12 0.25

skelet666 [1.2K]

What do u mean can u show a picture or be more specific

5 0

3 years ago