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3 years ago

Please help! (listing BRAINLIST and giving points) :)

Mathematics

2 answers:

Firlakuza [10]3 years ago

7 0

Answer:

7 hrs

Step-by-step explanation:

$187 for 11 hrs

$119 for x hrs

write a proportion.

187/11 = 119/x since Reuben is making money at the same rate.

solve for x:

187x = 1309

x=7

7 hours

joja [24]3 years ago

3 0

Answer:

7 hours

Step-by-step explanation:

Reuben works for 11 hours to earn $187

This means, his earnings rate is $187 per 11 hours of work

In 1 hour he would earn = 187/ 11 = $17

Therefore, he earns $17 in 1 hour

To find out how many hours he has to work to make $119, we multiply this by the rate.

He will earn $119 in = $119 x (1 hour/ $17) = 7 hours

Reuben has to work 7 hours to make $119

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The National Highway Traffic Safety Administration reported the percentage of traffic accidents occurring each day of the week.

Zigmanuir [339]

Answer:

Hence,

Test statistic $X^{2}$ = 9.269.

p value = 0.148

Sunday= 15.23%, Monday= 12.62%, Tuesday= 13.10%, Wednesday=11.67%,

Thursday= 13.10%, Friday= 16.19%, Saturday= 18.09%.

Step-by-step explanation:

relative observed Expected Chi square

Category frequency(p) $O_{i}$ Ei=total*p $(O-E)^{2}$ $R^{2}_{i} =(O_{i} -E_{i} )^{2} /E_{i}$

1 0.142857143 64.0 60.00 16.00 0.267

2 0.142857143 53.0 60.00 49.00 0.817

3 0.142857143 55.0 60.00 25.00 0.417

4 0.142857143 49.0 60.00 121.00 2.017

5 0.142857143 55.0 60.00 25.00 0.417

6 0.142857143 68.0 60.00 64.00 1.067

7 0.142857143 76.0 60.00 256.00 4.267

Total 1.000 420 420 556 9.269

Test statistic $X^{2}$ = 9.269.

p value = 0.148 from excel: chidist(9.269,6)

Percentage %= Frequency of traffic occur on category x 100 / Total number of frequency given.

Category Percentage%

Sunday 15.23%

Monday 12.62%

Tuesday 13.10%

Wednesday 11.67%

Thursday 13.10%

Friday 16.19%

Saturday 18.09%

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Please help! (listing BRAINLIST and giving points) ​:)​

Please help! (listing BRAINLIST and giving points) :)