Rajan bought a suit for rs 2995. he paid 7% sales tax on it. what did he pay in total

On a rectangular plece of cardboard with perimeter 16 inches, three parallel and equally spaced creases are made. (See Figure 1.

Nuetrik [128]

Dhhjjjjj dksjskskbsksjskks

5 0

2 years ago

Integer Exponents

SashulF [63]

5-6 kwkakskdjanskskskskksksksksksksk

8 0

3 years ago

mariarad [96]

Answer:

$p_v =P(z>2.087) =0.0184$

So with the p value obtained and using the significance level given $\alpha=0.01$ we have $p_v>\alpha$ so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 1% of significance the mean for the control group it's not significantly higher than the mean of the treatment group by 1 point.

Step-by-step explanation:

When we have two independent samples from two normal distributions with equal variances we are assuming that

$\sigma^2_1 =\sigma^2_2 =\sigma^2$

$\sigma=2.5$

And the statistic is given by this formula:

$z=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{\sigma\sqrt{\frac{1}{n_1}}+\frac{1}{n_2}}$

Where z follows a normal standard distribution

The system of hypothesis on this case are:

Null hypothesis: $\mu_c \leq \mu_t+1$

Alternative hypothesis: $\mu_c >\mu_t+1$

Or equivalently:

Null hypothesis: $\mu_c - \mu_t \leq 1$

Alternative hypothesis: $\mu_c-\mu_t>1$

Our notation on this case :

$n_c =45$ represent the sample size for group control

$n_t =45$ represent the sample size for group treatment

$\bar X_c =5.2$ represent the sample mean for the group control

$\bar X_t =3.1$ represent the sample mean for the group treatment

And now we can calculate the statistic:

$z=\frac{(5.2-3.1)-(1)}{2.5\sqrt{\frac{1}{45}}+\frac{1}{45}}=2.087$

And now we can calculate the p value using the alternative hypothesis:

$p_v =P(z>2.087) =0.0184$

So with the p value obtained and using the significance level given $\alpha=0.01$ we have $p_v>\alpha$ so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 1% of significance the mean for the control group it's not significantly higher than the mean of the treatment group by 1 point.

5 0

3 years ago

The graph shows how many skateboards a company made over a period of time. How can you show that the slope is constant?

eimsori [14]

The slope is constant because the graph shows a line

4 0

1 year ago

Select the correct answer.

Elan Coil [88]

We can make a conclusion about the data collection method used was fair since both shoe designs were tested on identical parameters option (B) is correct.

<h3>What is simple random sampling?</h3>

Simple random sampling is a sampling strategy in which every item in the population has an equal probability of being chosen for the sample.

We have:

Two manufacturers of the shoe company:

Fastex Shoes
SportsPlus

SportsPlus came up with a design that it claims performs even better than Fastex's design.

SportsPlus decided to test the claims:

It created two groups of 15 randomly selected athletes each.
Members of both groups were pretested and determined to have equal athletic ability.
Additionally, they followed the same nutrition plan and training program during the study.

Based on the data the statement "The data collection method used was fair since both shoe designs were tested on identical parameters".

Thus, we can make a conclusion about the data collection method used was fair since both shoe designs were tested on identical parameters option (B) is correct.

Learn more about the simple random sampling here:

brainly.com/question/13219833

#SPJ1

3 0

2 years ago