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ehidna [41]
2 years ago
8

Can someone help me please

Mathematics
1 answer:
IrinaVladis [17]2 years ago
7 0

hey what's up! the answer is c

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I need help fast
Pie
YZ since they are in the same spot in the cong statement
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3 years ago
What is the area of the figure?
bija089 [108]

Answer:

B)48

Step-by-step explanation:

Cut the figure to get 2 rectangles. 9x4=36 And then 6x2=12. Add the two numbers 36+12 to get 48.

8 0
3 years ago
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An adult sleeps about 480 per day. In infant sleeps about 820 minutes per day. About how many more minutes does an infant sleep
AysviL [449]
(820*7)-(480*7)=? This is how to solve the equation

6 0
3 years ago
Evaluate the following expression.
melisa1 [442]

Answer:

40

Step-by-step explanation:

y = 4

z = 2

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40

8 0
3 years ago
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Consider the hypotheses below. Upper H 0​: mu equals 50 Upper H 1​: mu not equals 50 Given that x overbar equals 60​, s equals 1
Neko [114]

Answer:

We conclude that  \mu\neq 50.

Step-by-step explanation:

We are given that x bar = 60​, s = 12​, n = 30​, and alpha = 0.10

Also, Null Hypothesis, H_0 : \mu = 50

Alternate Hypothesis, H_1 : \mu \neq 50

The test statistics we will use here is;

                    T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~  t_n_-_1

where, X bar = sample mean = 60

              s = sample standard deviation = 12

              n = sample size = 30

So, Test statistics = \frac{60-50}{\frac{12}{\sqrt{30} } } ~ t_2_9

                             = 4.564

At 10% significance level, t table gives critical value of 1.311 at 29 degree of freedom. Since our test statistics is more than the critical value as 4.564 > 1.311 so we have sufficient evidence to reject null hypothesis as our test statistics will fall in the rejection region.

P-value is given by, P(t_2_9 > 4.564) = less than 0.05% {using t table}

Here also, P-value is less than the significance level as 0.05% < 10% , so we will reject null hypothesis.

Therefore, we conclude that \mu\neq 50.

7 0
3 years ago
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