PLEASE HELP ME THIS IS SO IMPORTANT

Mathematics

2 answers:

Allisa [31]3 years ago

7 0

Answer:

Step-by-step explanation:

Leni [432]3 years ago

5 0

Answer:I believe it is (C) I’m not 100% sure but I think so

Step-by-step explanation:

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HELP I WILL GIVE YOU BRAINLIEST <br><br> Question: What is the solution to this quadratic?

Nataly_w [17]

(5,0) if it’s asking the solution or do you want the equation? Technically the solution would be where the parabola touched the x axis

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3 years ago

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Gina saw twice as many tigers as lions at the zoo. The number of bears she saw was 7 less than the number of tigers. She saw fiv

Fynjy0 [20]

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A study of 35 golfers showed that their average score on a particular course was 92. The sample standard deviation was 5. We wan

svlad2 [7]

Answer:

$t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$

Step-by-step explanation:

We have a sample of size n = 35, $\bar{x} = 92$ and $s = 5$ . As we want to construct a 95% confidence interval to estimate the value of the true population mean $\mu$ , we should use the pivotal quantity given by $T = \frac{\bar{X}-\mu}{S/\sqrt{n}}$ which comes from the t distribution with n - 1 = 35 - 1 = 34 degrees of freedom. Besides we should use the t-value $t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$ , i.e., regarding the t-distribution with 34 degrees of freedom, we have an area of 0.025 above 2.0322 and below the probability density function. The rationale behind this is that $P(-2.0322\leq T\leq 2.0322) = 0.95$ because of the simmetry of the t distribution.