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3 years ago

What is the value of the expression? (5/2)2+3/4^3

2 answers:

wel3 years ago

7 0

12 + 15 + 45 + 1 23 = 196 = 316 ≅ 3.166667

irakobra [83]3 years ago

5 0

Assuming you put this correctly and it's 3/4^3 not 3/(4^3); The answer would be 2.5*2+3/4^3 = 5 + 3/4^3 = 5.42. However, if it's the latter your answer would instead be 5.05.

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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%

5 0

3 years ago

A restaurant has 75% of its tables being used. Which ratio compares the used tables with all the tables in the restaurant?

Bogdan [553]

75%=75/100=75:100=3/4

4-3=1

1/4=tables not used.

1/4=25/100=25:100

So....25:75 = not used tables : used tables

Hoped I helped!

5 0

3 years ago

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gulaghasi [49]

Answer:

1. Number of warts on a toad ⇒ discrete variable

2. Survival time after poisoning ⇒ continuous variable

3. Temperature of porridge ⇒ continuous variable

4. Number of bread crumbs in 10 meters of trail ⇒ discrete variable

5. Length of wolves’ canines ⇒ continuous variable

A discrete variable is the one which takes over range of real number, for a value in range that variables are permitted to take, there is minimum distance to nearest permissible value. In contrast, continuous variables are the one which can take infinitely many values.

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3 years ago

The list show the number of employees in nine departments at a company

Nimfa-mama [501]

Answer:

Step-by-step explanation:

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SVEN [57.7K]

<h2>It will take 1/4 of a minute to drain 18 liters</h2>

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3 years ago