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Shtirlitz [24]
2 years ago
6

Do you know the answer ?

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
6 0

draw in the line, here are the points

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A simple random sample of 60 adults is obtained from a normally distributed​ population, and each​ person's red blood cell count
Goshia [24]

Answer:

Step-by-step explanation:

sample size = n = 60

Sample mean = x bar = 5.25

Sample sd = s = 0.55

Std error of sample = s/sqrt n = 0.071

H_0: x bar = 5.4\\H_a: x bar

(One tailed test)

Mean difference = 5.25-5.4 = -0.15

Test statistic t = Mean diff/Se = -2.11

df=59

(since population std dev is not known t test is used)

p value =0.01955

Since p <alpha =0.05 we reject null hypothesis.

The results suggest about the sample​ group that the sample is from a population with a mean less than 5.4

7 0
3 years ago
Use cavalieri's principle to a circular pillar candle is 2.8 inches wide &amp; 6 inches tall. find the volume of the candle.
wolverine [178]
The candle has the shape of a cylinder with height H=6 in, and radius of the circular base R= (2.8)/2 =1.4  (in).

The volume of the cylinder is Area(base)*height = 

\pi  R^{2} *H=3.14* (1.4)^{2}*6= 37   (in cubed)

According to Cavalieri's principle, the volume of the candle is equal to the volume of the cylinder we described.

Answer: 37 in cubed 



5 0
3 years ago
HELP ME PLEASE ASAP! Zoe is making a quilt. The ratio of red squares to green squares is 2 to 3. She uses a total of 55 squares.
Marizza181 [45]

Answer:

33

Step-by-step explanation:

For every 5 squares, two are red and three are green.  So 3/5 of the squares are green.

3/5x55=33

7 0
2 years ago
If you flip a coin ten times, how many diffrent sequences of heads and tails are possible
nikdorinn [45]

Answer:

I'm pretty sure its D

Step-by-step explanation: Brainliest???

3 0
3 years ago
What are the solutions to 2(x-7)^2 = 32?
MariettaO [177]
2(x-7)^2 = 32\\&#10;(x-7)^2=16\\&#10;x-7=-4 \vee x-7=4\\&#10;x=3 \vee x=11&#10;
3 0
3 years ago
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