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sergij07 [2.7K]
3 years ago
5

Please help someone, mildy hard

Mathematics
2 answers:
erastova [34]3 years ago
8 0
The answer is 4823.84 I’m pretty sure
Jet001 [13]3 years ago
3 0

Answer:

welp,more piont for me cuz tats confuzizzng

Step-by-step explanation:

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To save money, a local charity organization wants to target its mailing requests for donations to individuals who are most suppo
mars1129 [50]

Answer:

The 80% confidence interval for difference between two means is (0.85, 1.55).

Step-by-step explanation:

The (1 - <em>α</em>) % confidence interval for difference between two means is:

CI=(\bar x_{1}-\bar x_{2})\pm t_{\alpha/2,(n_{1}+n_{2}-2)}\times SE_{\bar x_{1}-\bar x_{2}}

Given:

\bar x_{1}=M_{1}=6.1\\\bar x_{2}=M_{2}=4.9\\SE_{\bar x_{1}-\bar x_{2}}=0.25

Confidence level = 80%

t_{\alpha/2, (n_{1}+n_{2}-2)}=t_{0.20/2, (5+5-2)}=t_{0.10,8}=1.397

*Use a <em>t</em>-table for the critical value.

Compute the 80% confidence interval for difference between two means as follows:

CI=(6.1-4.9)\pm 1.397\times 0.25\\=1.2\pm 0.34925\\=(0.85075, 1.54925)\\\approx(0.85, 1.55)

Thus, the 80% confidence interval for difference between two means is (0.85, 1.55).

3 0
3 years ago
17 − 2v = 41 solve v
anastassius [24]

17-2V=41

 subtract 17 from both sides

-2v =24

 v = 24 / -2 = -12

v=-12

3 0
3 years ago
The accompanying table shows the value of a car over time that was purchased for 14000 dollars, where x is years and y is the va
dimaraw [331]
Since the company table shows the value of a car overtime that is purchased for $14,000 where exes years and why is the value of the coronavirus write an expression of regression equation for the set of data running I’ll call fissions to the nearest hundredth using a question term in the value of the car to the nearest cent after 12 years were the answer is actually 14
7 0
2 years ago
The table below shows data from a survey about the amount of times students spend doing homework each week. The students were ei
Anna007 [38]

Answer:

in table data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school: High Low Q1 Q3 IQR Median Mean σ

College 50 5 7.5 15 7.5 11 13.8 6.4

High School16 0 9.5 14.5 5 13 10.7 5.3 Both spreads are best described with the standard deviation.

Step-by-step explanation:

8 0
2 years ago
In triangle MPN, angle P is a right angle. If cos N= 3/5 which of the following statements is true
Bezzdna [24]

Answer: Sin N = \frac{4}{5}

Step-by-step explanation:

Since we have given that

In triangle MPN, ∠P=90°

\cos N=\frac{3}{5}

As we know the formula for "Trigonometric Ratios":

\cos N=\frac{Base}{Hypotenuse}=\frac{3}{5}

By Pythagorus theorem , we get

H^2=B^2+P^2\\\\5^2=3^2+P^2\\\\25=9+P^2\\\\25-9=P^2\\\\16=P^2\\\\P=\sqrt{16}\\\\P=4\ units

So, we get,

\sin N=\frac{Perpendicular}{Hypotenuse}=\frac{4}{5}

Hence, Sin N = \frac{4}{5}

3 0
3 years ago
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