If the marginal cost of producing every quantity decreases, all the following occur except _____________.

the consumer surplus increases
minimum supply-price does not change
the efficient quantity increases
marginal benefit increases

Which of the following statements about a competitive market is incorrect?

Underproduction creates a deadweight loss.
A price ceiling makes the market more efficient.
A price floor makes the market less efficient.
Overproduction reduces consumer surplus and producer surplus.

The table gives the marginal benefit and marginal cost of videotapes. If there are no external benefits or external costs, the efficient number of videotapes to produce is ________ a week.

5
3
1
any number less than 3

The table gives the marginal benefit and marginal cost of videotapes. At the efficient quantity, the minimum-supply price of a videotape is ______________ and the value of a videotape is ________________.

£8; £10
£8; £12
£10; £10
£10; £8

The table gives the marginal benefit and marginal cost of a videotape. At the efficient quantity of videotapes, consumer surplus is _____ a week, and producer surplus is _____ a week.

£3; £3
£33; £27
£10; £10
£2; £2

The table gives the marginal benefit and marginal cost of a videotape. If the opportunity cost of producing a videotape increases by £2, then the efficient number of videotapes is _____ a week.

2
4
1
5

The table gives the marginal benefit and marginal cost of a videotape. If the number of videotapes produced is cut to 2 a week, then the ___________________.

value of the second videotape is £10
minimum supply-price of the second videotape is £9
opportunity cost of the second videotape is £11
price is £9 a videotape

The figure illustrates the market for bagels. If the number of bagels produced is cut from 20 to 10 an hour, consumer surplus decreases by ___________.

£0.50 a bagel
£5.00 an hour
£7.50 an hour
£2.50 an hour

The figure illustrates the market for bagels. If the number of bagels is cut from 20 to 10 an hour, the deadweight loss is ____________________.

-£5.00 an hour
£0 an hour
£0.50 a bagel
£5.00 an hour

The figure illustrates the market for bagels. If the number of bagels is increased from 20 to 30 an hour, consumer surplus plus producer surplus ____________ and deadweight loss is _______________.

increases; negative
decreases; negative
increases; positive
decreases; positive

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