Mathematical literacy

Kathy's kitchen serves 3 pieces of bacon with every 2 eggs.If the restaurant served 42 eggs at breakfast, how much bacon did the

Natali [406]

63 i believe..
3 divided by 2 is 1.5
1.5 times 42 is 63

4 0

3 years ago

What is (2n - 1) × 11

Reptile [31]

Answer:

22n - 11

Step-by-step explanation:

5 0

3 years ago

ASAP help me with this question PLEAZE

chubhunter [2.5K]

Answer:

38°

Step-by-step explanation:

EFGH is an isosceles trapezoid (a trapezoid with two congruent legs is isosceles)

∠HGF=70° (base angles of an isosceles trapezoid are congruent)

∠EGH=32° (angles in a triangle add to 180°)

∠FGE=38° (angle subtraction postulate)

4 0

2 years ago

Determine the number of solutions that exist to the equation. 8(j-4)=2(4j-16)

lukranit [14]

<span>8(j-4)=2(4j-16)
8j - 32 = 8j - 32

Since both sides are equal, there are is an infinite number of solutions.

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8 0

3 years ago

survey on televisions requiring repairs within four years was conducted. Nineteen out of 200 televisions from company A and 25 o

Fudgin [204]

Answer:

$z=\frac{0.095-0.125}{\sqrt{0.11(1-0.11)(\frac{1}{200}+\frac{1}{200})}}=-0.959$

$p_v =P(Z$

Comparing the p value with the significance level assumed $\alpha=0.05$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to to FAIL to reject the null hypothesis, and we can't conclude that company A are more reliable than televisions from company B at 5% of significance.

Step-by-step explanation:

Data given and notation

$X_{1}=19$ represent the number of tvs who need a repair for A

$X_{2}=25$ represent the number of tvs who need a repair for B

$n_{1}=200$ sample 1 selected

$n_{2}=200$ sample 2 selected

$p_{1}=\frac{19}{200}=0.095$ represent the proportion estimated for the sample A

$p_{2}=\frac{25}{200}=0.125$ represent the proportion estimated for the sample B

$\hat p$ represent the pooled estimate of p

z would represent the statistic (variable of interest)

$p_v$ represent the value for the test (variable of interest)

$\alpha=0.05$ significance level given

Concepts and formulas to use

We need to conduct a hypothesis in order to check if company A are more reliable than televisions from company B (that means p1<p2) , the system of hypothesis would be:

Null hypothesis: $p_{1} \geq p_{2}$

Alternative hypothesis: $p_{1} < p_{2}$

We need to apply a z test to compare proportions, and the statistic is given by:

$z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

Where $\hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{19+25}{200+200}=0.11$

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

Calculate the statistic

Replacing in formula (1) the values obtained we got this:

$z=\frac{0.095-0.125}{\sqrt{0.11(1-0.11)(\frac{1}{200}+\frac{1}{200})}}=-0.959$

Statistical decision

Since is a left sided test the p value would be:

$p_v =P(Z$

Comparing the p value with the significance level assumed $\alpha=0.05$ we see that $p_v>\alpha$ so we can conclude that we have enough evidence to to FAIL to reject the null hypothesis, and we can't conclude that company A are more reliable than televisions from company B at 5% of significance.

4 0

3 years ago

Mathematical literacy​

Mathematical literacy