The quotient is 5 and

Mathematics

1 answer:

bonufazy [111]3 years ago

4 0

1/2. It isn't asking for another solution, just the fraction.

Hope this helps!

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Male cardinal birds sing to attract females. An ornithologist wants to test the claim that the true mean duration of songs sung

Inessa05 [86]

Answer:

$t=\frac{6.31-6}{\frac{1.2}{\sqrt{35}}}=1.5283$

d. 1.5283

Step-by-step explanation:

Data given and notation

$\bar X=6.31$ represent the sample mean

$s=1.2$ represent the sample standard deviation

$n=35$ sample size

$\mu_o =6$ represent the value that we want to test

t would represent the statistic (variable of interest)

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

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is higher than 6 seconds, the system of hypothesis are :

Null hypothesis: $\mu \leq 6$

Alternative hypothesis: $\mu > 6$

Since we don't know the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{6.31-6}{\frac{1.2}{\sqrt{35}}}=1.5283$

d. 1.5283

8 0

3 years ago

If a = b and e = f, what is the value of y A. 87 B.88 C. 91 D. 92

klasskru [66]

Answer is B, hope this helps

4 0

3 years ago

Read 2 more answers