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Reptile [31]
3 years ago
6

Help quick! The table below shows the water temperature at certain depths of a lake. Using an logarithmic model, write an equati

on for the curve of best fit, then estimate the depth of water at a temperature of 50 degrees F.
Depth Temp
(ft) (°F)
2 86
12 78
14 75
45 71
68 68

A) 1,256 ft
B) 1,679 ft
C) 2,364 ft
D) 2,634 ft
Mathematics
2 answers:
Norma-Jean [14]3 years ago
5 0

Answer:

we need the graph lol

Step-by-step explanation:

Morgarella [4.7K]3 years ago
5 0

Answer:

we need a graph

Step-by-step explanation:

have a good day

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Peer review involves scientists openly publishing details of the methods they used, the results of
IrinaK [193]

Answer: 1. Peer review involves scientists openly publishing details of the methods they used, the results of

their experiments, and the reasoning behind their hypotheses for other scientists working in the

same field to evaluate. = B true .

2. Data from controlled experiments can provide evidence that one variable causes another. = B true .

Step-by-step explanation:

Peer review is when a scientist conducts an experiment and then gives all of their information and findings to peers in order for them to follow the findings and see if the first findings are rational.

4 0
4 years ago
A sociologist wants to determine if the life expectancy of people in africa is less than the life expectancy of people in asia.
Colt1911 [192]

Answer:

The sample statistics are attached.

First, we need to determine the hypothesis.

The null hypothesis should be: H_{o} : u_{africa} \geq u_{asia}.

The alternative hypothesis should be: H_{a}: u_{africa}

The next step is about calculating the<em> t statistics </em>based on the samples. This <em>t test </em>will give the probability value or p-value, which determines if there's enough to reject the null hypothesis. The formula we need to use to find the t-value is: t=\frac{x_{1}-x_{2}  }{\sqrt{\frac{s_{1} ^{2} }{n_{1} } +\frac{s_{2} ^{2} }{n_{2} } } }

Replacing all the values into the formula, we have:

t=\frac{52.4-58.1}{\sqrt{\frac{(7.4)^{2} }{45}+\frac{(8.8)^{2} }{35}  } } \\t=\frac{-5.7}{\sqrt{1.2+2.2} } =\frac{-5.7}{1.8} =-3.2

Therefore, the t-value is -3.2.

Now, we using a level of significance of 0.01, and a degree of freedom (df) of 34, we use the t-table to find the p-value for this results. (df = N -1; in this case, we take the smaller sample, which is 35, giving us 34 of df).

Therefore, according to the table attached, <em>the p-value is less than 0.01,</em> which is less than our level of significance. This result means that the null hypothesis is rejected. In other words, there's enough evidence to say that <em>the life expectancy of people in Africa is less than the life of expectancy of people in Asia.</em>

<em></em>

3 0
3 years ago
Please help!! (math)
olga55 [171]

Bro answer.

Step-by-step explanation:

This is the step of doing this so write this in class 10 we do like this ok

7 0
2 years ago
5(x-8)=30<br> WILL GIVE BRAINLIST AND THANKS IF CORRECT
zvonat [6]

Answer:

x = 14

Step-by-step explanation:

5x - 40 = 30

+40       +40

5x   = 70

divide by 5 on both sides

x= 14

7 0
3 years ago
Oliver has a piece of chocolate what is the volume of the piece of chocolate <br>​
OLga [1]

Answer:

The answer would be 60 cubic centimeters.

Step-by-step explanation:

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3 years ago
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