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3 years ago

2E5 in scientific notation

Mathematics

1 answer:

Kisachek [45]3 years ago

3 0

Answer:

200,000 (brainliest would be appreciated!)

Step-by-step explanation:

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A radio talk show host with a large audience is interested in the proportion p of adults in his listening area who think the dri

vekshin1

Answer:

The margin of error for a 90% confidence interval is 0.075.

Step-by-step explanation:

We are given that he asks listeners to phone in and vote "yes" if they agree the drinking age should be lowered and "no" if not.

Of the 100 people who phoned in, 70 answered "yes."

Let $\hat p$ = sample proportion of people who say yes

So, $\hat p=\frac{X}{n}$ = $\frac{70}{100}$ = 0.70

where, X = Number of people who say yes = 70

n = Number of people phoned in = 100

Now, Margin of error formula for any confidence interval is given by;

Margin of error = $Z_(_\frac{\alpha}{2}_ ) \times \text{Standard of Error}$

where, $\alpha$ = level of significance = 10%

Standard of error = $\sqrt{\frac{\hat p(1-\hat p)}{n} }$

Also, the critical value of x at 5% ( $\frac{\alpha}{2} =\frac{0.10}{2}$ ) level of significance is 1.645.

SO, Margin of Error = $1.645 \times \sqrt{\frac{\hat p(1-\hat p)}{n} }$

= $1.645 \times \sqrt{\frac{0.70(1-0.70)}{100} }$

= 0.075

Hence, the margin of error for a 90% confidence interval is 0.075.

8 0

3 years ago

Explain what part 4 of the graph represents. Be sure to explain with the units given for

Goryan [66]

Hello good evening, friends, I want to ask a question of Lyophilized Medication medicines are considered reconstituted medications.

6 0

3 years ago

Find any three rational numbers between 1/4 and 1/2

cluponka [151]

Answer:

12/40, 15/40, 18/40

Step-by-step explanation:

1/4, 1/2 = 1/4, 2/4

Since, Three rational numbers cannot come in between 1/4 and 2/4, we multiply them with 10.

∴ 1/4 × 10 = 10/40

∴ 2/4 × 10 = 20/40

∴ Three rational numbers between 10/40 and 20/40 = 12/40, 15/40, 18/40

(You can add more numbers from between 10/40 and 20/40 if you need)

7 0

3 years ago

Tyler went to the supermarket to buy food for a food pantry. He has $36, and can carry up to 20 pounds of food in his backpack.

Inessa [10]

Answer:

1,12/ Not a solution

2,10/ solution

4,5/ solution

6,10/ not a solution

12,8/ not a solution

18,6/ not a solution

Step-by-step explanation:

all you have to do is put it into the equation.

for example:

1,12

1x1+12x3= $37

1x1+12x1.5= 19lbs

This is not a solution because he can carry it but doesn't have the money to buy it.

3 0

3 years ago

ice for the 11.5-ounce package: $3.19 per ounce ice for the 30.6-ounce package: $7.98 per ounce which is the better buy:

djyliett [7]

The 30.6 ounce because it would be less money for more as if you bought 3 11.5 once packages trying to spend less you would end up spending more

5 0

3 years ago