All polyhedrons are prisms or pyramids. True or false

Mathematics

2 answers:

JulsSmile [24]2 years ago

3 0

Answer:

Step-by-step explanation:

False (APEX)

Galina-37 [17]2 years ago

3 0

Answer:

Answer of given Statement is False.

Step-by-step explanation:

We know that

Polyhedron is a Solid figure entirely made up up of polygons.

for example: cube, cuboid, soccer ball, etc

Prism is a solid figure with two equal bases.

for example: Cube. Cuboid, Cylinder, etc

Pyramid is a polyhedron with a base and an Apex at top.

for example: Cone, triangle based pyramid, etc

Since, Cylinder is a Prism but it is not a polyhedron. Also Cone is pyramid but it is not a polyhedron,

Therefore, Answer of given Statement is False.

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In 1998, as an advertising campaign, the Nabisco Company announced a "1000 Chips Challenge," claiming that every 18-ounce bag of

Phoenix [80]

Answer:

A 95% confidence interval for the mean number of chips in a bag of Chips Ahoy Cookies is [1187.96, 1288.44].

Step-by-step explanation:

We are given that statistics students at the Air Force Academy (no kidding) purchased some randomly selected bags of cookies and counted the chocolate chips.

Some of their data are given below; 1219, 1214, 1087, 1200, 1419, 1121, 1325, 1345, 1244, 1258, 1356, 1132, 1191, 1270, 1295, 1135.

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 mean number of chocolate chips = $\frac{\sum X}{n}$ = 1238.2

s = sample standard deviation = $\sqrt{\frac{\sum (X-\bar X)^{2} }{n-1} }$ = 94.3

n = sample of car drivers = 16

$\mu$ = population mean number of chips in a bag

Here for constructing a 95% confidence interval we have used a One-sample t-test statistics because we don't know about population standard deviation.

So, 95% confidence interval for the population mean, $\mu$ is ;

P(-2.131 < $t_1_5$ < 2.131) = 0.95 {As the critical value of t at 15 degrees of