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2 years ago

Write the expanded form, for 34.75

Mathematics

2 answers:

aalyn [17]2 years ago

7 0

Answer:

30+4+0.7+0.05

Step-by-step explanation:

Because expanded form is add the number.

3=30

4=4.

7=0.7

and 5=0.05 so all together is 30+4+0.7+0.05

ira [324]2 years ago

6 0

Answer:

Step-by-step explanation:

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Here are summary statistics for randomly selected weights of newborn girls: nequals202, x overbarequals28.3 hg, sequals6.1 hg

Lorico [155]

Answer:

The confidence interval is 27.5 hg less than mu less than 29.1 hg

(A) Yes, because the confidence interval limits are not similar.

Step-by-step explanation:

Confidence interval is given as mean +/- margin of error (E)

mean = 28.3 hg

sd = 6.1 hg

n = 202

degree of freedom = n-1 = 202-1 = 201

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value corresponding to 201 degrees of freedom and 5% significance level is 1.97196

E = t×sd/√n = 1.97196×6.1/√202 = 0.8 hg

Lower limit = mean - E = 28.3 0.8 = 27.5 hg

Upper limit = mean + E = 28.3 + 0.8 = 29.1 hg

95% confidence interval is (27.5, 29.1)

When mean is 28.3, sd = 6.1 and n = 202, the confidence limits are 27.5 and 29.1 which is different from 27.8 and 29.6 which are the confidence limits when mean is 28.7, sd = 1.8 and n = 17

7 0

3 years ago

(0,0) and the point (-6,13)

yanalaym [24]

Answer:

Slope? If so it is 13/-6

Step-by-step explanation:

Use y1-y2/x1-x2

6 0

2 years ago

Previously 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of

mr Goodwill [35]

Answer:

p value = 0.03514

Step-by-step explanation:

Hypotheses would be

$H_0: p = 0.05\\H_a: p$

(left tailed test at 10% level of significance)

Here p stands for the sample proportion of mothers smoked more than 21 cigarettes during their pregnancy.

Sample size =130

persons who smoked = 2

Sample proportion = $\frac{2}{130} \\=0.0154$

Assuming H0 to be true

Std error= $\sqrt{0.05*0.95/130} \\=0.01911$

p difference = -0.0346

Test statistic z=-1.81

p value = 0.03514

Since p is less than 0.10, significance level, we reject H0

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3 years ago

I need help with Part B.

saveliy_v [14]

Just look at both picture and you are going to understand

4 0

3 years ago

Read 2 more answers

Please hELP with this math question, If u can please explain how I can do it.

allsm [11]

Answer:

Step-by-step explanation:

right angle is equal to 90 so you just minus 76 from 90

8 0

3 years ago