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juin [17]
3 years ago
12

What is numbers line x<8

Mathematics
1 answer:
drek231 [11]3 years ago
7 0

Answer:

I cant draw it perfectly so please dont judje if it not helpful

Step-by-step explanation:

x<------------------------------------->infinity

So put a dot at the arrow pointing to X and then trace the line and the arrow to infinity dark.

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The null and alternate hypotheses are: H0: π1 ≤ π2 H1: π1 &gt; π2 A sample of 100 observations from the first population indicat
nadezda [96]

Answer:

365

Step-by-step explanation:

8 0
3 years ago
What is 0.42 in a fraction in simplest form
RideAnS [48]
0.42 equals

- 42/100

- 21/50

The simplest form for 0.42 is 21/50
3 0
3 years ago
Five thousand tickets are sold at​ $1 each for a charity raffle. Tickets are to be drawn at random and monetary prizes awarded a
aksik [14]

Answer:

the expected value of this raffle if you buy 1​ ticket = -0.65

Step-by-step explanation:

Given that :

Five thousand tickets are sold at​ $1 each for a charity raffle

Tickets are to be drawn at random and monetary prizes awarded as​ follows: 1 prize of ​$500​, 3 prizes of ​$300​, 5 prizes of ​$50​, and 20 prizes of​ $5.

Thus; the amount and the corresponding probability can be computed as:

Amount                            Probability

$500 -$1 = $499                1/5000

$300 -$1 = $299                3/5000

$50 - $1 = $49                     5/5000

$5 - $1 = $4                      20/5000

-$1                                   1- 29/5000 = 4971/5000

The expected value of the raffle if 1 ticket is being bought is  as follows:

E(x) = \sum x  * P(x)

E(x) = (499 * \dfrac{1}{5000} + 299 *\dfrac{3}{5000} + 49 *\dfrac{5}{5000} + 4 * \dfrac{20}{5000}  + (-1 * \dfrac{4971}{5000} ))

E(x) = (0.0998 + 0.1794+0.049 + 0.016  + (-0.9942 ))

E(x) = (0.3442 -0.9942 )

\mathbf{E(x) = -0.65}

Thus; the expected value of this raffle if you buy 1​ ticket = -0.65

7 0
3 years ago
Internet company Gurgle is carrying out testing on the efficiency of its search engine. A sample of 31 searches have been carrie
Mrac [35]

Answer:

d. Approximate the standard normal distribution with the Student's t distribution

(0.2199 ; 0.2327)

Step-by-step explanation:

Given that :

Sample size, n = 31

Sample mean, xbar = 0.2258

Sample standard deviation, s = 0.0188

Confidence interval (C. I) :

xbar ± margin of error

Margin of Error : Tcritical * s/sqrt(n)

Degree of freedom, df = n - 1 = 31 - 1 = 30

Tcritical value :

T0.05/2, 30 = 2.042

Margin of Error = 2.042 * 0.0188/sqrt(31)

Margin of Error = 0.0068949

C. I = 0.2258 ± 0.0068949

Lower boundary : (0.2258 - 0.006895) = 0.2189

Upper boundary : (0.2258 - 0.006895) = 0.2327

(0.2199 ; 0.2327)

3 0
3 years ago
What is the equation of this graph? coordinates: (1,7), (0,0),(-1,-7)
Vilka [71]

Answer:

y = 7x

Step-by-step explanation:

Slope: (7-0)/(1-0) = 7

y-intercept is obviously 0

y = 7x + 0

y = 7x

4 0
3 years ago
Read 2 more answers
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