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MissTica
2 years ago
15

A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100

Mathematics
1 answer:
gulaghasi [49]2 years ago
3 0

Answer:

C. 97.1 should be your answer

Step-by-step explanation:

You might be interested in
What is 56 1/4 as a fraction in simplest form?
Luba_88 [7]

We have to simplify 56 \frac{1}{4}%

This is a mixed fraction, with 56 as the whole number part and \frac{1}{4} as the fractional part

Such a fraction can be simplified as:

Denominator of simplified fraction = Denominator of mixed fraction

and Numerator of simplified fraction = (Denominator of mixed fraction × Whole number) + (Numerator of simplified fraction)

⇒ Denominator of simplified fraction = 4

and Numerator of simplified fraction = (4 × 56) + (1)

⇒ Numerator of simplified fraction = 225

Hence, the mixed fraction in its simplest form is \frac{225}{4}


6 0
3 years ago
It's easy math but I am not very good at it, I need some help. can someone help me????? solve all 3of them please!
jonny [76]

Answer:

1. 458 - 247 = 211

2. 58.92 - 43.87 = 15.05

3. 51/8 - 15/8 = 4.5

Here you go ! Hope this helps !

4 0
3 years ago
Read 2 more answers
in 2003 the state pension was increased by 2% to £78.03. What was the state pension before this increase?
Andrej [43]
I dont know for Sure but i think it is
76.4694 (or Rounded 76.47)
6 0
2 years ago
Read 2 more answers
A line, Z, has equation y = 5x + 3.<br> Write down an equation of a line parallel to line Z.
leva [86]

\huge\underline\color{purple}{Answer \: ☘}

y = 5x

Step-by-step explanation:

as \: the \: line \: is \: parallel \: to \: line \: z \\ hence , \\ set \:  the \: equation \: of \: the \:  line \: as \\ y = kx + b \\   \\given... \\ y = 5x + 3 \\ comparing \: the \: equations \: we \: get \:  \\ k = 5 \\  \\ hence \: the \: equation \: can \: be \: y = 5x

hope helpful~

7 0
2 years ago
Read 2 more answers
Researchers are studying rates of homeowners in a certain town. They believe that the proportion of people ages 36-50 who own ho
Ira Lisetskai [31]

Answer:

Being p1 the proportion for people of ages 36-50 and p2 the proportion for people of ages 21-35, the null and alternative hypothesis will be:

H_0: p_1-p_2=0\\\\H_a: p_1-p_2>0

Step-by-step explanation:

A hypothesis test on the difference of proportions needs to be performed for this case.

We have two sample proportions and we want to test if the true population proportions differ from each other, usign the information given by the sample statistics.

The claim is that the proportion of people of ages 36-50 who own homes is significantly greater than the proportin of people age 21-35 who own homes.

The term "higher" will define the alternative hypothesis, that is the hypothesis that represents what is claimed. The null hypothesis always include the equal sign, and will state that both proportions do not differ.

Being p1 the proportion for people of ages 36-50 and p2 the proportion for people of ages 21-35, the null and alternative hypothesis will be:

H_0: p_1-p_2=0\\\\H_a: p_1-p_2>0

6 0
3 years ago
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