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Usimov [2.4K]
2 years ago
15

A hand-held digital music player was marked down by 1/4 of the original price. If the sales price is $200. What is the original

price?
Group of answer choices

$266.67

$270.00

$225.00

$250.00
Mathematics
1 answer:
Xelga [282]2 years ago
5 0

Answer:A boo

Step-by-step explanation: trust me :) ✨

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Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif
dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

<u>Step:-1</u>

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals t_{0.01} =2.82  (from tabulated value).

The mean value = 0.0365

x±t_{0.01} \frac{S}{\sqrt{n-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{22} }

0.0365±2.82 \frac{0.0046}{4.690 }

using calculator

0.0365±0.00276

Confidence interval is

(0.0365-0.00276,0.0365+0.00276)

(0.0338,0.0392)

the mean value is lies between in this confidence interval

(0.0338,0.0392).

<u>Answer:-</u>

<u>using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.</u>

4 0
2 years ago
One planet holds 14 Tomato seedlings. If you have 1,113 seedlings, how many containers do you need to hold all seedlings?
kaheart [24]

Answer:

If your talking about the containers, then you would need 80

containers, hope this helps.

Step-by-step explanation:

5 0
3 years ago
The functions r and s are defined as follows. r(x)=-x-5 s(x)= -2x-5 . Find the value of s(r(4)).
Svet_ta [14]

Answer:

s(r(4)) = 13

Step-by-step explanation:

Substitute and calculate:


s(r(4)) = 13

6 0
2 years ago
Alison is playing a video game. At the end of each level, the player is given either a bag of gold or a magic wand.
Igoryamba
<span>Outcome Bag of Gold Magic Wand
Relative frequency 0.32 0.68

</span><span>The relative frequency of getting a bag of gold is .......... reasonably close
</span>
.32 is close to 30% so

<span>Alison's claim about the theoretical probability is likely to be 2............true

Further, this means that the theoretical probability of getting a magic wand is most likely 3............1 - 30% = 70%</span>
3 0
2 years ago
Read 2 more answers
what is the distributive property :( i forgot what it was uh mrs. tara falls is killing me with math
jolli1 [7]
Distributive property lets you distribute 3(3+x)

so this is the property, note: xy=x times y=x(y)

a(b+c)=(ab)+(ac)
7 0
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