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stellarik [79]
3 years ago
7

Unit 3 : Piecewise Functions

Mathematics
1 answer:
MaRussiya [10]3 years ago
6 0

Answer:

wheres the question. that's just a topic

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A horticulturist working for a large plant nursery is conducting experiments on the growth rate of a new shrub. Based on previou
valkas [14]

Answer:

t=\frac{1.8-2}{\frac{0.5}{\sqrt{48}}}=-2.771    

The degrees of freedom are given by:

df=n-1=48-1=47  

And the p value would be:

p_v =P(t_{(47)}    

Since the p value is lower than the significance level we have enough evidence to conclude that the true mean for this case for the growth rate is less than 2cm per week

Step-by-step explanation:

Information given

\bar X=1.8 represent the sample mean for the growth

s=0.5 represent the sample standard deviation    

n=48 sample size    

\mu_o =2 represent the value that we want to compare

\alpha=0.01 represent the significance level

t would represent the statistic    

p_v represent the p value

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean is less than 2cm per week, the system of hypothesis are :    

Null hypothesis:\mu \geq 2    

Alternative hypothesis:\mu < 2    

Since we don't know the population deviation the statistic is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)    

Replacing the info given we got:

t=\frac{1.8-2}{\frac{0.5}{\sqrt{48}}}=-2.771    

The degrees of freedom are given by:

df=n-1=48-1=47  

And the p value would be:

p_v =P(t_{(47)}    

Since the p value is lower than the significance level we have enough evidence to conclude that the true mean for this case for the growth rate is less than 2cm per week

6 0
3 years ago
What is the velocity of a wave with a frequency of 930 Hz and a wavelength of 0.50 m
erma4kov [3.2K]
Hi, thank you for posting your question here at Brainly.

To find the velocity of light or any electromagnetic wave, we use the equation: v = wavelength * frequency. Substituting,

v = 0.5 m * 930 1/s
v = 465 m/s
8 0
3 years ago
Read 2 more answers
Which expression represents the average of three test scores?
fomenos

Answer:

It is C

Step-by-step explanation:

trust me ☜(゚ヮ゚☜)

4 0
3 years ago
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josiah is taking his friends to the movies each ticket cost $10, and popcorn is $5 a bag. there is a 3$ service fee for the enti
musickatia [10]
X = total amount paid
y = number of tickets
z = number of bags

your equation:
x = 10y + 5z + 3

hope this helps
4 0
3 years ago
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One man is three times as old as another. Fifteen years ago the first was six times as old as the second. Find their ages now.
alex41 [277]

Answer:

error

Step-by-step explanation:

4 0
3 years ago
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