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Alex Ar [27]
2 years ago
5

My little cuz need help can you help her please

Mathematics
2 answers:
zimovet [89]2 years ago
6 0

may be that the way it should be

levacccp [35]2 years ago
3 0

the is going to be x=3 43- 35 =18

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Lisa and Lori each dried 1/3 of the glasses. What fraction of the glasses
Yuki888 [10]
3/3-1/3= 2/3 of the glasses
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3 years ago
SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school are given below
kvasek [131]

Answer:

The value of test statistics is 25.

Step-by-step explanation:

We are given below the SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school;

380, 520, 480, 510, 560, 630, 670, 490, 500, 550, 400, 350, 440, 490, 620, 660, 700, 730, 740, 560

<em>Let </em>\sigma<em> = population standard of the reading and writing section SAT score of the students in this school</em>

So, Null Hypothesis, H_0 : \sigma \leq 100     {means that the reading and writing section SAT score of the students in this school is lesser than or equal to 100}

Alternate Hypothesis, H_A : \sigma<em> </em>> 100     {means that the reading and writing section SAT score of the students in this school is higher than 100}

The test statistics that would be used here is <u>One-sample Chi-square</u> test statistics;

                        T.S. =  \frac{(n-1)s^{2} }{\sigma^{2} }  ~ \chi^{2} __n_-_1

where, s^{2} = sample variance =  \frac{\sum (X-\bar X)^{2} }{n-1}  = 13135.8

            n = sample of 11th-grade students = 20

So, <u><em>the test statistics</em></u>  =  \frac{(20-1)\times 13135.8^{2} }{100^{2} }

                                     =  24.96 ≈ 25

Hence, the value of test statistics is 25.

5 0
3 years ago
X-2&gt;5 <br> I need a person that can give me answers<br> Skpe at Kazuto Kirigaya king jolt 07
balu736 [363]

Answer:

no identity will escape! I know where you live

4 0
2 years ago
If y=1/4 when x=5, find y when x=7, given that y directly with x
mariarad [96]

Answer:

7/20

Step-by-step explanation:

Since y varies directly with x, the ratio of y to x is proportional.

... y / 7 = (1/4)/(5)

... y / 7 = 1 / 20 . . . . simplify

... y = 7/20 . . . . . multiply by 7

3 0
3 years ago
Plz help me on question 1 and show your work plz
ozzi
All the edges of a cube are the same length.

Volume = length x width x height

Volume = 9in x 9in x 9in = 729 in³
7 0
3 years ago
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