Write a recursive rule for the sequence. The sequence may be arithmetic, geometric or neither: 66,33,16.5,8.25,...

Maisie bought a house.

sergeinik [125]

Answer:

55.52+10=65.52%

65.52 divide 3=21.84%

Ans:21.84%

7 0

3 years ago

An automobile company wants to determine the average amount of time it takes a machine to assemble a car. A sample of 40 times y

aksik [14]

Answer:

A 98% confidence interval for the mean assembly time is [21.34, 26.49] .

Step-by-step explanation:

We are given that a sample of 40 times yielded an average time of 23.92 minutes, with a sample standard deviation of 6.72 minutes.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample average time = 23.92 minutes

s = sample standard deviation = 6.72 minutes

n = sample of times = 40

$\mu$ = population mean assembly time

Here for constructing a 98% confidence interval we have used a One-sample t-test statistics because we don't know about population standard deviation.

So, a 98% confidence interval for the population mean, $\mu$ is;

P(-2.426 < $t_3_9$ < 2.426) = 0.98 {As the critical value of z at 1% level

of significance are -2.426 & 2.426}

P(-2.426 < $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ < 2.426) = 0.98

P( $-2.426 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $2.426 \times {\frac{s}{\sqrt{n} } }$ ) = 0.98

P( $\bar X-2.426 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+2.426 \times {\frac{s}{\sqrt{n} } }$ ) = 0.98

98% confidence interval for $\mu$ = [ $\bar X-2.426 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+2.426 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $23.92-2.426 \times {\frac{6.72}{\sqrt{40} } }$ , $23.92+2.426 \times {\frac{6.72}{\sqrt{40} } }$ ]

= [21.34, 26.49]

Therefore, a 98% confidence interval for the mean assembly time is [21.34, 26.49] .

7 0

2 years ago

Simplify. 4 + 3(10 - 23)

aliina [53]

4 + 3(10 - 23)

4 + 3 × (-13)

4 - 39

-35 << answer

hope this helps, God bless!

5 0

2 years ago

Read 2 more answers

Need to know b and c : picture available ; worth 10 points

bulgar [2K]

B;

$6.00 lb + 15% = 6.00 x 1.15 = $6.90

$6.90 x 2.6lbs = $17.94

C;

New price is $.90 more.

3.5 x .90 = $3.15 more

6 0

3 years ago

What is the value of 2 in 0.259?

anastassius [24]

Ir's 0.2
or two tenths.
You can tell because it's in the tenths digit place, right next to the decimal.

3 0

3 years ago

Write a recursive rule for the sequence. The sequence may be arithmetic, geometric or neither: 66,33,16.5,8.25,...​

Write a recursive rule for the sequence. The sequence may be arithmetic, geometric or neither: 66,33,16.5,8.25,...